MCMC  MTSFB TC T 008:2014 
 TECHNICAL CODE  
 
 
 
 
 
 
 
 
 
 
 
 
 
SPECIFICATION  FOR  
INTEGRATED SERVICES DIGITAL NETWORK  (ISDN)   
USING BASIC ACCESS  
 
First Revision  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Developed by   Registered by  
  
 
 
Registered date: 18 December 2014  
 
 
© Copyright 2014  
MCMC  MTSFB TC T 008:2014 
i DEVELOPMENT OF TECHNICAL CODES   
 
The Communications and Multimedia Act 1998 (‘the Act’) provides for Technical Standards Forum 
designated under section 184 of the Act or the Malaysian Communications and Multimedia 
Commission (‘the Commission’) to prepare a technical code. The technical code prepared pursuant to 
section 185 of the Act shall consist of, at least, the requirement for network interoperability and the 
promotion of safety of network facilities.  
 
Section 96 of the Act also provides for the Commis sion to determine a technical code in accordance 
with section 55 of the Act if the technical code is not developed under an applicable provision of the 
Act and it is unlikely to be developed by the Technical Standards Forum within a reasonable time.  
 
In ex ercise of the power conferred by section 184 of the Act, the Commission has designated the 
Malaysian Technical Standards Forum Bhd (‘MTSFB’) as a Technical Standards Forum which is 
obligated, among others, to prepare the technical code under section 185 of  the Act.  
 
A technical code prepared in accordance with section 185 shall not be effective until it is registered by 
the Commission pursuant to section 95 of the Act.  
 
For further information on the technical code, please contact:  
 
Malaysian Communications  and Multimedia Commission (MCMC)  
Off Persiaran Multimedia  
63000 Cyberjaya  
Selangor Darul Ehsan  
MALAYSIA  
 
Tel: +60 3 8688 8000  
Fax: +60 3 8688 1000  
http://www.skmm.gov.my  
 
OR 
 
Malaysian Technical Standards Forum Bhd ( MTSFB ) 
4805 -2-2, Block 4805, Persiaran Flora   
CBD Perdana 2  
Cyber 12  
63000, Cyberjaya  
Selangor Darul Ehsan  
MALAYSIA  
 
Tel: +60 3 8322 1441/1551  
Fax: +60 3 8322 0115  
http://www.mtsfb.org.my  
 
 
  MCMC  MTSFB TC T 008:2014 
ii  CONTENTS   
Committee Representation  ................................ ................................ ................................ ....................  iiv 
FOREWORD  ................................ ................................ ................................ ................................ ...........  v  
 
Section A  
Introduction   ................................ ................................ ................................ ................................ .............  1 
1. Scope  ................................ ................................ ................................ ................................ ... 1 
2. Normative References  ................................ ................................ ................................ ........  1 
3. Abbreviations   ................................ ................................ ................................ ......................  2 
4. General requirements  ................................ ................................ ................................ ..........  3 
4.1 Design  of Equipment  ................................ ................................ ................................ ...........  3 
4.3 Interoperability  ................................ ................................ ................................ .....................  5 
5. Electromagnetic Compatibility & Electrical Safety Requirements  ................................ ....... 5 
 
Section B  
Basic User -Network Interface – Layer 1 Specification (ITU -T Recommendation I.430 11/1995)  ..........  6 
 
Section C   
ISDN User -Network Interface – Data Link Layer (ITU -T Recommendation Q.921 09/1997 & 
Amendment  1 06/2000)  ................................ ................................ ................................ .........................  14  
 
Section D  
Network layer requirements based on EN 300 403 -1 11/99, Integrated Services Digital Network 
(ISDN): Digital Subscriber Signaling System No.  One (DSS1) protocol: Signaling network layer 
for circuit -mode basic call control; Part 1: Protocol Specification [ITU -T Recommendation Q.931 
(1993), modified].  ................................ ................................ ................................ ................................ .. 20 
1. Introduction  ................................ ................................ ................................ ........................  20 
2. Supporting Information  ................................ ................................ ................................ ....... 20 
3. National Option Selections and Clarifications  ................................ ................................ ... 21 
3.1 Layer One Protocol for Basic Call Control (DSS1)  ................................ ............................  21 
3.2 Layer Two Protocol for Basic Call Control (DSS1)  ................................ ............................  21 
3.3 Layer Three Protocol for Basic Call Control (DSS1)  ................................ .........................  21 
4. Terminal Characteristics Related To Access Signaling  ................................ ....................  26 
5. Terminal Adaptors  ................................ ................................ ................................ .............  26 
5.1 Circuit Mode Bearer Services  ................................ ................................ ............................  26 
 MCMC  MTSFB TC T 008:2014 
iii Section E  
Digital Transmission System on Metallic Local Lines for ISDN Basic Rate Access (ITU-T 
Recommendatio n G.96 1 03/1993)  ................................ ................................ ................................ ..........  27 
 
Tables  
 
1 General  layer 1 requirements  ................................ ................................ ..............................  6 
2 Functional  characteristics  ................................ ................................ ................................ .... 7 
3 Interface  procedures  ................................ ................................ ................................ ............  8 
4 Layer 1 maintenance  ................................ ................................ ................................ ...........  9 
5 Electrical  characteristics  ................................ ................................ ................................ .... 10 
6 Power feeding  ................................ ................................ ................................ ....................  12 
7 Interface  connector  contact  assignments  ................................ ................................ ..........  13 
8 Frame  structure  for peer-to-peer communication  ................................ ..............................  14 
9 Elements  of procedure  and formats  of field for data link layer peer-to-peer 
communication  ................................ ................................ ................................ ................................ ...... 14 
10 Elements  for layer-to-layer communication ................................ ................................ ........  15 
11 Procedures for use by  the data link la yer ................................ ................................ ..........  16 
12 Annexes  and Appendices  ................................ ................................ ................................ .. 18 
13 Appendices  ................................ ................................ ................................ ........................  21 
14 Digital transmission system on metallic local lines for ISDN basic rate access  ................  27 
15 Core  requirements  for a system  using 2B1Q  line code  (ITU-T Rec. Q.961  Appendix  II) ... 28 
16 Extension  functions  of the system  using  2B1Q  line code (Annex A to ITU -T Rec.   
 Q.961 Appendix II)  ................................ ................................ ................................ .............  31 
 
Figure 1  Reference Configurations for ISDN User -Network Interface (Figure 1/I.430)  .....................  2 
 
Annexes  
 
A Normative references  ................................ ................................ ................................ ........  32 
B Technical  Guidelines  of ISDN S upplementary  Service  ................................ .....................  33 
C Addendum/Corrigendum  ................................ ................................ ................................ ..... 1 
  MCMC  MTSFB TC T 008:2014 
iv Committee Representation  
 
 
The Fixed Terminal Working Group under the Malaysian Technical Standards Forum Bhd (MTSFB) 
which developed this Technical Code consists of representatives from the following organisations:  
 
NEC  Corporation of Malaysia Sdn.Bhd.  
SIRIM QAS Int ernational Sdn Bhd  
Telekom Malaysia Berhad  
TIME dotcom Berhad  
AJV Holding Sdn Bhd  
Epson Malaysia  
Packet One Networks Sdn Bhd  
Panasonic Malaysia  
Panasonic System Networks  
 
 
 
  MCMC  MTSFB TC T 008:2014 
v FOREWORD  
 
 
This Technical Code for the Specification for Integrated Services Digital Network (ISDN) Using Basic 
Access (BA) (First Revision) (‘this Technical Code’) was developed pursuant to section 185 of the Act 
588 by the Malaysian Technical Standards Forum Bhd (MTSFB) via its Fixed Terminal Working 
Group . 
 
This Technical Code was developed for the purpose of certifying communications equipment under 
the Communications and Multimedia (Technical Standards) Regulations 2000.  
 
This Technical Code cancels and replaces Technical Specifica tion for Connecting to the Integrated 
Services Digital Network (ISDN) using Basic  Access , SKMM FTS ISDN -BA Rev. 1.01:2007.   
 
This Technical Code shall continue to be valid and effective until reviewed or cancelled.  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 MCMC  MTSFB TC T 008:2014 
vi  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
THIS PAGE IS INTENTIONALLY LEFT BLANK 
 
 SPECIFICATION FOR INTERGRATED SERVICES DIGITAL NETWORK (ISDN) 
USING BASIC ACCESS  (BA)  
 
 
Section A  
 
Introduction  
 
 
1. Scope  
 
1.1.   This Technical Code identifies the minimum technical requirements for connecting to the 
Integrated Services Digital Network (ISDN) at the S/T interface using Basic Access (BA). It also 
identifies the requirements for the digital transmission system at the network side of the Network 
Termination (NT1) forming part of the ISDN BA . 
 
1.2.   ISDN  BA equipme nt connected  to the S/T interface (see Figure  1) shall have e ither 
T erm inal Equipm ent T yp e 1 (T E1) or T erm inal Adaptor (T A) functio n incorporated . 
For such equipment, su ppliers  shall demonstrate  that it has been  tested  to comply  with the 
requirements  defined  in Section  A, B, C and D  of this Specification. 
 
Section  B – Physical  layer requirements  based  on ITU-T Rec. I.430, Basic Rate  User -
Network  - Interface Layer  1 Specification  
Section  C – Link Access  Procedure  on the D-channel,  LAPD based on ITU-T Rec. Q.92 1, ISDN  
User -Network  Interface  - Data  Link Layer  Specification  
Section  D – Network layer requirements based on EN 300 403 -1 11/99, Integrated Services 
Digital Network (ISDN): Digital Subscriber Signaling  System No.  One (DSS1) 
protocol: Signaling  network layer for circuit -mode basic call control; Part 1: Protocol 
Specification [ITU -T Recommendation Q.931 (1993), modified].  
 
1.3   If the ISDN  BA equipment has the NT1 function b uilt-in, suppliers shall demonstrate that it 
has been  tested  to comply  with the requirements  defined in Section  A, B, C, D as well as Section  E. 
 
1.4.    If the NT1 function is standalone, suppliers shall demonstrate that the NT1 equipment has 
been tested to comply with the requirements defined in Section A and E. Section E defines the digital 
transmission system at the network side of the NT1, and is based on the ITU -T Rec. G.961. The 
digital transmission system shall use line codes and transmission methods given in Appendix II of the 
ITU-T Rec. G.961. References t o ETSI ETR 080 are given for information only. The TE side of the 
NT1 shall conform to the network requirements of the ITU -T Rec. I.430.  
 
 
2. Normative references  
 
The normative references as in Annex A are indispensable for the application of this Technical 
Specification. For dated references, only the edition cited applies. For undated references, the latest 
edition of the normative references (including any amendments) applies.  
 
  MCMC  MTSFB TC T 008:2014 
2 
 
Figure 1.   Reference Configurations for ISDN User -Network Interface (Figure 1/I.430)  
 
 
3. Abbreviations  
 
The use of the term TE within the Specifica tion refers to a TE1, a TA or a Networ k Terminatio n 2 (NT2).  
 
The followin g notation s are used in this Specificatio n : 
 
CR Conformance  Requiremen t define s feature s and function s that mus t be supporte d at 
minimum.  
M Mandator y requiremen t is wher e the TE implementatio n shall confor m to those clause s in 
that sectio n relatin g to the operatio n of Laye r 1, Laye r 2 and Laye r 3 protoco l in the TE. 
O Optiona l requiremen t mean s it is optiona l whethe r TE implements tha t functio n but if 
functio n is implemented , it shall confor m to the clause s in that sectio n relatin g to the 
operatio n of the TE Laye r 1, Laye r 2 and Laye r 3 protocol.  
 
However , the use of optiona l function s is possibl e only if the networ k operator s have 
implemen ted these option s in their networks.  
NA Not Applicabl e is wher e the requirement s specifie d in that section o n the TE shall not be 
applicabl e for attachment.  
GID The sectio n provide s General  Information  and Definition s. 
TE1 ISDN -capable terminal equipment e.g.: Digital phone and digital fax  
TE2 Non-ISDN equipment e.g: Analogue phone and the RS -232 serial port on computer  
TA Terminal adapter that interface th e TE2 devices with ISDN network  
NT1 Network terminator that reside between telco’s network and customer equipment  
NT2 An intelligent device that can perform switching function e.g: PABX and Local  Area  
Network (LAN)  MCMC  MTSFB TC T 008:2014 
3 4. General requirements  
 
4.1  Design  of Equipment  
 CR 
Powe r supply  a) For AC powered TE, the operating voltage shall be 
rated/ marked at 230V or 240V in line with the country's 
nominal voltage and frequency in accordance to MS IEC 
60038. If the product is rated with multiple or a range of 
voltages, voltage range between 230V (+10%, -6%) shall 
be included. Testing shall be conducted based on 230V 
(+10%, -6%) or 240V and other relevant voltages, if the 
product is marked with multiple or a range of voltages     
 
b) Product shall be rated/ marked at 50Hz and testing 
shall be conducted at 50Hz. If the product is marked at 
50/60Hz or 50 -60Hz then testing shall be conducted 
either at 50Hz or 60Hz, whichever is more unfavourable  
 
c) Where external power supply is used, e. g AC 
adaptor, it shall not affect the capacity of the equipment 
to meet this specification. Adaptor must be pre -
approved by the relevant regulatory body before it can 
be used with the equipment.  
 
NOTE:   Either one of these options shall be applied.                                                                                                                                                                        Note 1 
Identificatio n of 
equipment  Equipme nt shall be marke d with:   
 a) supplier’ s or manufacturer’ s name or identificatio n 
mark  M 
 b) supplier’ s or manufacturer’ s mode l or type reference  M 
 The marking s shall be legible, indelibl e and readil y visible  M 
Keypa d Dialling  a) Keypad s used in equipm ent for dialling shall be 
alphanumeric keypad s and the relationship s betwee n 
the letters and the digit s shall compl y with ITU-T Rec 
E.161 as show n in Figure 2. M 
 b) The associa ted letters shall not impair the legibility 
of the digit (§ 3.1.1, ITU -T Rec. E.161).  M 
 c) The `tactile i dentifier on the  “5” button  shall be 
provi ded (§ 3.6, ITU -T Rec. E.161).  M 
  MCMC  MTSFB TC T 008:2014 
4  
1 
 2 
ABC  3 
DEF 
   
   
4 
GHI 5 
JKL 6 
MNO  
   
   
7 
PQRS  8 
TUV 9 
WXYZ  
   
   
* 0 # 
 
Figure 2.  Alphanumeric Keypad Layout (ITU -T Rec. E. 161)  
 
4.2  Interface  
 
4.2.1 Network Interface  
 
Connector  2 wire or RJ45  
Feed voltage  48 V to 110 V d.c  
Line Coding  2B1Q  
Impedance  120 Ω (RJ45)  
Switch type  NET 3  
 
 
4.2.2 Analogue Interface  
 
When provided, the equipment has the TA function for connecting analogue equipment at the R 
interface as shown Figure 1.  
 
Connector  RJ 11 jack or RJ45 jack  Note 2  
Feed voltage  ≤ 40 V DC  Note 2  
Line extension  Interworking with loop resistance up to 500 Ω Note 2  
MFPB receiver  a)  Level range: 0 dBm to -26 dBm  Note 2  
 b)  Signal detection: min 40 ms Note 2  
 c)  Interdigit pause : min 40 ms Note 2  
 d)  Frequency deviation: ± 1.8%  Note 2  
Ringing current transmit  a)  Frequency: 24 Hz Note 2  
 b)  Periodicity for normal ringing: 0.4 s (on ), 0.2s (off), 0.4s 
(on), 2.0 s (off)  Note 2  
 c)  Periodicity for d uplex/distinctive ringing:  1.2s (on), 3.0 s 
(off) Note 2  
 d)  Voltage: ≤ 75V Note 2  
Dial tone transmit  425 Hz continuous tone  Note 2  MCMC  MTSFB TC T 008:2014 
5 Busy tone transmit  a)  425 Hz  Note 2  
 b)  Periodicity: 0.75 s (on), 0.75 s (off)  Note 2  
Output level  Analogue output signal level shall not exceed -6 dBm 
averaged over any 10 s period  Note 2  
A/D/A companding  Digital telephones and other customer equipment providing 
acoustic interfaces to the digital bit stream shall comply with 
ITU-T G.711 (A -law).   
   
NOTE:   Requirement is ‘NA’ if TE does not have TA function for connecting analogue equipment to the R interface.  
 
 
4.3 Interoperability  
   
TE1 and TA are dynamically interoperable if they implement a common and compatible set of features, 
functions and options and can demonstrate satisfactory mutual communication in a real network 
architecture environment as performance test conditions are va ried and exercised. It is mandatory  that 
the TE 1 and TA be tested with the respective Service Provider to ensure interoperability.  The general 
reference model for interoperability is shown in Figure 1.  
 
 
5. Electromagnetic Compatibility & Electrical Safety Requirements  
 
5.1  The equipment shall comply with the limits  for conducted  disturba nce at the mains  termi nals 
and tel ecommunication ports, a nd the limits for r adiated d isturba nce defi ned in the IEC CISPR 22.  
 
5.2 The equip ment shall  comply with the  IEC 6095 0-1 safety stand ard1. The requirem ents in IEC 
6095 0-1 that are applic able to the equip ment [e.g. class of equipment, type of teleco mmunication 
network voltage (TNV) c ircuit and types of  compo nents shall  be identified a nd compli ed with. 
 
 
  
                                                           
1 The safety standard in cludes, among ot hers, protection of  telecomm unications network service personnel and users of other 
equipment connec ted to the ne twork from haza rds in  the equ ipment. MCMC  MTSFB TC T 008:2014 
6 Section B  
 
Basic User -Network Interface – Layer 1 Specification   
(ITU-T Recommendation I.430 11/1995)  
 
 
Table  1.  General  layer 1 requirements  
 
Title ITU-T Rec. 
I.430  ETSI 
TBR 3 CR Remarks  
General  1 – GID  
Service characteristics  2 – – Heading  
Services required  from the 
physical medium  2.1 – M A balance  metallic transmission  
medium  for each direction  of 
transmission capable  of supporting  
192 kb it/s 
Service provided to layer 2 2.2 – –  
Primiti ves between layer 1 and 
the other  entities  2.3 – M  
Modes  of operation  3 – GID  
Point -to-point  operation  3.1 – M  
Point -to-multipoint  operation  3.2 – M  
Types of wiring configuration  4 – GID  
Point -to-point  configuration  4.1 – Note   
Point -to-multipoint  configuration  4.2 – Note   
Wiring  polarity  integrity  4.3 – M  
Location  of the interfaces  4.4 – GID  
NT and TE associated  wiring 4.5 – M  
NOTE :  Either  one of these  wiring  configuration  shall be applied.  
 
  MCMC  MTSFB TC T 008:2014 
7 Table  2.  Functional  characteristics  
 
Title ITU-T 
Rec. I.430  ETSI 
TBR 3 CR Remarks  
Functiona l characteristics  5 – GID Heading  
Interfac e functions  5.1 – – Heading  
B-channel  5.1.1  – M For each directio n of transmission , 
provide s two independen t 64 kbit/s 
channels fo r use as B-channels  
Bit timing  5.1.2  – M Provide s bit timing at 192 kbit/s  
Octet timing  5.1.3  – O Provide s 8 kHz octet timing  
Fram e alignment  5.1.4  – M Provide s informatio n to enable N T and 
TE to recove r the TDM channels  
D-channel  5.1.5  – M For each directio n of transmission , 
provide s one D- channe l at a bit rate of 
16 kbit/s  
D-channe l acces s procedure  5.1.6  – M For procedure s relatin g to D- channe l 
acces s see Claus e 6.1. 
Powe r feeding  5.1.7  – GID Refer to Claus e 9 
Deactivation  5.1.8  – M Refer to Claus e 6.2 
Activation  5.1.9  – M Refer to Claus e 6.2 
Interchang e circuits  5.2 – M Two interchang e circuits , one fo r each 
directio n of transmissio n shall be used to 
transfe r digita l signal s across th e 
interface.  
Connected/disconnected indication  5.3 – M The criterio n used is the 
appearance/disappearanc e of power.  
TEs powere d acros s the interface  5.3.1  – M  
TEs not powere d acros s the 
interface  5.3.2  – M  
Indicatio n of connectio n status  5.3.3  – M  
Fram e structure  5.4 – M In both directio n of transmission , the bits 
shall be groupe d into frame s of 48 bits 
each.  
Line code  5.5 9.3.2  M Figur e 4/I.430  
Timin g considerations  5.6 – M A TE shall deriv e its timing fro m the 
signa l receive d from N T and use this 
derive d timing t o synchronis e its 
transmitted signal.  
 
  MCMC  MTSFB TC T 008:2014 
8 Table  3.  Interface  procedures  
 
Title ITU-T Rec. 
I.430  ETSI 
TBR 3 CR Remarks  
Interfac e procedures  6 – – Heading  
D-channe l acces s procedure  6.1 9.4.1  M  
Interfram e (laye r 2) time fill 6.1.1  9.4.1.1  M Interfram e time fil l in the NT to TE 
directio n is HDLC flags.  
D-echo channel  6.1.2  – NA Networ k requirement  
D-channe l monitoring  6.1.3  – M  
Priorit y mechanism  6.1.4  9.4.1.2  M The use of priorit y class 2 is no t a 
requiremen t unde r TBR 3. 
Collisio n detection  6.1.5  9.4.1.3  M  
Priorit y system  6.1.6  – M An exampl e of how the priority syste m 
may be implemented.  
Activation/deacti vation  6.2 9.4.2  – Heading  
Definitions  6.2.1  – – Heading  
TE states  6.2.1.1  9.4.2.1  M PS2 is not a requirement  under TBR  
3. Loss  of local power  or absence of 
powe r from PS1 may be used  for 
determining  the connection  status.  
NT states  6.2.1.2  – NA  
Activat e primitives  6.2.1.3  – M  
Deactivate  primitives  6.2.1.4  – M  
Management  primitives  6.2.1.5  – O  
Valid  primitive  sequences  6.2.1.6  – NA  
Signals  6.2.2  9.4.2.2  M  
Activation/deactivation  procedure  
for TEs  6.2.3  9.4.2.3  M  
Activation/deactivation  for NTs 6.2.4  – NA  
Timer  values  6.2.5  9.4.2.3.2  O Timer  3 < 30 s 
Activation  times  6.2.6  – – Heading  
TE activation  times  6.2.6.1  9.4.2.4  M  
NT activation  times  6.2.6.2  – NA  
Deactivation  times  6.2.7  9.4.2.5  M  
Frame  alignment  procedures  6.3 9.4.3  M  
     
 
  MCMC  MTSFB TC T 008:2014 
9 Table 3.  Interfac e procedures (continued)  
 
Title ITU-T 
Rec. I.430  ETSI 
TBR 3 CR Remarks  
Frame  alignment  procedure  in the 
direction  NT to TE 6.3.1  9.4.3 
Note  1 M Loss  of frame  alignment  is assumed  
when  a time period equivalent  to 2 (“n” 
in the case of  TBR 3) 48-bit frames  has 
elapsed  without  having detected  valid 
pairs  of line code violations  obeying  the 
 14-bit criterion  as described  in § 
5.4.2.2.  
Frame  alignment  may be assumed  to 
occur  when  3 (“m” in  the case  of TBR 3) 
consecutive  pairs  of line code violations  
obeying  the  14-bit criterion  have  been  
detected.  
Frame  alignment  in the direction  TE 
to NT 6.3.2  – NA  
Multiframing  6.3.3  9.4.4 
Note  2 O The use of Q-channel  and S- channel  is 
optional.  
S-channel  structuring  algorithm  6.3.4  – O The use of S-channel  is optional.  
Idle channel  code  on the B -
channels  6.4 9.4.5  M  
NOTES:  
1.  In TBR 3, “n” is a value  between  2 to 20, and “m” is a value  between  3 and 100. There  is no requirement  for “m” and “n” to 
remain  constant  under  all circumstances  of loss and recovery  of frame  alignment.  The recommended  values  for “m” and “n” are 
5. 
2.  Under  TBR 3, when  the TE receives  an FA bit which  is binary  ZERO,  it shall send  a binary  ZERO  in the  corresponding  FA bit 
position  of the frame  transmitted  to the NT. No requirement  applies  when the  FA bit received  is a binary  ONE.  
 
 
Table  4.  Layer 1 maintenance  
 
Title ITU-T 
Rec. I.430  ETSI 
TBR 3 CR Remarks  
Layer 1 maintenance  7 –  Heading  
Provision for operationa l and 
maintenanc e function s between 
termina l and NT1 7.1 – O  
 
  MCMC  MTSFB TC T 008:2014 
10 Table  5.  Electrical  characteristics  
 
Title ITU-T Rec. 
I.430  ETSI 
TBR 3 CR Remarks  
Bit rate 8.1 9.2.1  M 192 kbit/s < ± 100 ppm 
Jitter and bit-phas e relationship 
between TE input and output  8.2 9.2.2  – Heading  
Test configurations  8.2.1  9.2.2.1  GID  
Timin g extractio n jitter 8.2.2  9.2.2.2  M ± 7% 
Total phas e deviatio n input to 
output  8.2.3  9.2.2.3 Not
e 1 M -7% to +15%  
NT jitter characteristics  8.3 – NA  
Terminatio n of the line 8.4 – NA  
Transmitte r outpu t characteristics  8.5 9.2.3  – Heading  
Transmitte r outpu t impedance  8.5.1  – GID  
NT transmitte r outpu t impedance  8.5.1.1  – NA  
TE transmitte r outpu t impedance  8.5.1.2  9.2.3  M  
Test load impedance  8.5.2  – M 50  
Pulse shap e and amplitud e 
(binary ZERO)  8.5.3  9.2.4  Headin
g Figur e 13/I.430  
750 mV 
Pulse unbalance  8.5.4  9.2.5  M Withi n the threshol d as given in figur e 
9.5 (TBR 3) / Figure 13/I.430  
 5% 
Voltag e on other test loads (TE 
only)  8.5.5  9.2.6.1  
9.2.6.2  M 400  load and 
5.6  load 
Unbalanc e abou t earth  8.5.6  – M 10 kHz  f  300 kHz :  
 54 dB  
300 kHz < f  1 MHz : min. valu e 
decreasin g from 54 dB at 2 0 
dB/decade  
Longitudina l conversio n loss 
(LCL ) of the transmitte r output  – 9.2.7  – 10 kHz  f  300 kHz :  
 54 dB 
Recei ver input characteristics  8.6 – – Heading  
Receive r input impedance  8.6.1  – – Heading  
TE receive r input impedance  8.6.1.1  9.2.8 M As specifie d in § 8.5.1.2/I.430  
NT receive r input impedance  8.6.1.2  – NA  
Receive r sensitivit y – Noise and 
distortio n immunity  8.6.2  9.2.9  M  
TEs 8.6.2.1  9.2.9  M  
NTs for short passiv e bus 8.6.2.2  – NA  
NTs for point -to-point and short 
passi ve 8.6.2.3  – NA  
  MCMC  MTSFB TC T 008:2014 
11 Table 5.  Electrica l characteristic s (continued)  
 
Title ITU-T 
Rec. I.430  ETSI 
TBR 3 CR Remarks  
NTs for extende d passiv e bus 8.6.2.4  – NA  
NTs for point -to-point configuration  8.6.2.5  – NA  
NT receive r input delay 
charac teristics 8.6.3  – NA  
Unbalanc e abou t earth  8.6.4  – M 10 kHz  f  300 kHz :  
 54 dB 
300 kHz < f  1 MHz : min. 
value decreasin g from 54 dB at 2 0 
dB/decade  
– – 9.2.10  – Longitudina l Conversio n Loss (LCL ) of 
receive r inputs  
10 kHz  f  300 kHz :  
 54 dB 
Isolatio n from externa l voltages  8.7 – GID  
Interconnectin g media 
characteristics  8.8 – M  
Standar d ISDN basic acces s TE 
cord 8.9 9.1.4  M  
Longitudina l outpu t voltage  8.10 – GID  
Electromagneti c compatibility (EMC)  8.11 – Note 
2  
NOTE S: 
1.  The limitatio n applie s for input bit rates of 192 kbit/s ± 1 ppm.  
2.  EMC requirement s are specifie d in § 3 of this Specification.  
 
  MCMC  MTSFB TC T 008:2014 
12 Table  6.  Power feeding  
 
Title ITU-T Rec. 
I.430  ETSI 
TBR 3 CR Remarks  
Power feeding  9 9.5 – Heading  
Referenc e configuration  9.1 – M The use of leads c, d, e and f is 
mandatory.  
Function s specifie d at the acces s 
leads  9.1.1  9.5.1  M 9.1.1 i) is mandatory.  
Provisio n of powe r source s and 
sinks  9.1.2  – O PS3 is not used.  
Powe r feedin g voltage  9.1.3  – M Basic voltag e range is 34 V to 42 V 
from the powe r source.  
Power availabl e from NT 9.2 – O Heading  
Powe r sourc e 1 norma l and 
restricted mode  9.2.1  – O  
Voltag e NT from powe r sourc e 1 9.2.2  – O  
Voltag e of powe r sourc e 2 9.2.3  – O  
Short circui t protection  9.2.4  – M  
Power availabl e at TE 9.3 – O Heading  
Powe r consumptio n unit 9.3.1  – O  
Powe r sourc e 1 - Phanto m 
powering  9.3.2  – O  
Powe r sourc e 2 - Optiona l third 
pair 9.3.3  – O  
PS1 curren t transient  9.4 9.5.2  M Applicabl e to TE drawin g from powe r 
sourc e 1 
TE power consumption  9.5 – GID Heading  
Powe r sourc e 1 9.5.1  9.5.3  M Applicabl e when powe r sink 1 is 
implemented  
Powe r sourc e 2 9.5.2  Note 1 M Applicabl e when powe r sink 2 is 
implemented  
Galvanic isolation  9.6 9.5.4 Note 
2 M Isolatio n shall be a minimu m of 1 M 
when measure d at 500 V d.c. 
Limitation s on power sourc e and 
sink durin g transien t condition  9.7 9.5.5  GID  
Current/tim e limitation s for TEs 9.7.1  – – Heading  
Terminal s powere d from powe r 
sourc e 1 9.7.1.1 9.5.5.1  O Applicabl e when powe r sink 1 is 
implemented  
Terminal s powere d from powe r 
sourc e 2 9.7.1.2  Note 1 O Applicabl e when powe r sink 2 is 
implemented  
Powe r sourc e switchove r time 
(PS1 or PS2)  9.7.2  – O Applicabl e when switchove r is 
implemented  
Othe r TE require ments 9.7.3  9.5.5.2  – Heading  
Minimu m TE start up curren t from 
power sourc e 1 9.7.3.1  9.5.5.2. 1 O Applicable when power sink 1 is 
implemented  MCMC  MTSFB TC T 008:2014 
13 Table 6.  Power feeding (continued)  
 
Title ITU-T 
Rec. I.430  ETSI 
TBR 3 CR Remarks  
Minimu m TE start up curren t from 
power sourc e 2 9.7.3.2  Note 1 O Applicabl e when powe r sink 2 is 
implemented  
Verification  9.7.3.3  – GID Test circui t given in Claus e I.6 
Protectio n agains t short term 
interruptions  9.7.3.4  9.5.5.2.
2 M  
Behaviou r at switch -over 9.7.3.5  9.5.5.2.
3 O Applicabl e when switch -over is 
implemented  
Effectiv e capacitanc e at the PS1 or 
PS2 input to the TE 9.7.3.6  – GID  
TE behaviou r at low input voltage  9.7.3.7  – GID  
Othe r powe r sourc e requirements  9.7.4  – O  
PS1 direc t curren t unbalance  9.8 – GID  
TE requirements  9.8.1  9.5.5.3  O  
NT requirements  9.8.2  – NA  
Additiona l requirement s for an 
auxiliar y power suppl y (APS)  9.9 – NA  
Additiona l requirement s for NT1 
restricte d mode sourc e for 
compatibilit y with an APS 9.10 – NA  
NOTES : 
1.Unde r TBR 3, PS2 is not supported.  
2.Unde r TBR 3, for galvani c connectio n to earth , the direc t curren t betwee n PS1 and any earth connectio n on the TE shall not 
excee d 100A. 
 
 
Table  7.  Interface  connector  contact  assignments  
 
Title ITU-T 
Rec. I.430  ETSI 
TBR 3 CR Remarks  
Interfac e connecto r contact 
assignments  10 9.1  
Note M Contact s a, b, g and h are not used.  
NOTE .  The use of contact s a, b, g and h for PS2 and PS3 is outsid e the scope of TBR 3. 
  MCMC  MTSFB TC T 008:2014 
14 Section C  
 
ISDN User -Network Interface – Data Link Layer  
(ITU-T Recommendation Q.921 09/1997 & Amendment 1 06/2000)  
 
 
Table  8.  Frame  structure  for peer -to-peer  communication  
 
Title ITU-T Rec. 
Q.921  ETSI 
TBR 3 CR Remarks  
General  1 – GID  
Fram e structur e for peer-to-peer 
communication  2 10.1 GID Heading  
General  2.1 10.1.1  M  
Flag sequence  2.2 10.1.2  M  
Addres s field 2.3 10.1.3  M  
Contro l field 2.4 10.1.4  M  
Informatio n field 2.5 10.1.5  M  
Transparency  2.6 10.1.6  M  
FCS field 2.7 10.1.7  M  
Forma t convention  2.8 10.1.8  –  
Invalid frames  2.9 10.1.9 
Note  M  
Fram e abort  2.10 – M Not a TBR 3 requirement  
NOTE .  TBR 3 include s a frame which contain s a TEI that is not assigne d to the TE as invalid.  
 
Table  9.  Elements  of procedure  and formats  of field for data link layer peer -to-peer  
communication  
 
Title ITU-T Rec. 
Q.921  ETSI 
TBR 3 CR Remarks  
Element s of procedur e and 
formats o f field for data link layer 
peer-to- peer communication  3 10.2 – Heading  
General  3.1 10.2.1  GID  
Addres s field format  3.2 10.2.2  M  
Addres s field variables  3.3 10.2.3  –  
Contro l field formats  3.4 10.2.4  M  
Contro l field parameter s and 
associate d state variables  3.5 10.2.5  M  
Poll/Fina l (P/F) bit 3.5.1  10.2.5.1  M  
Multipl e frame operatio n - 
variable s and sequenc e numbers  3.5.2  10.2.5.2  –  
Unacknowledge d operatio n - 
variables an d parameters  3.5.3  – GID One paramete r is defined, N20 1 (see 
5.9.3).  
  MCMC  MTSFB TC T 008:2014 
15 Table 9.  Element s of procedur e and format s of field for data link layer peer-to-peer 
communication (continued)  
 
Title ITU-T 
Rec. 
Q.921  ETSI 
TBR 3 CR Remarks  
Fram e types 3.6 10.2.6  – Heading  
Command s and responses  3.6.1  10.2.6.1 
Note  M Refer to Table 5/Q.921  
Informatio n (I) command  3.6.2  10.2.6.2  M  
Set Asynchronou s Balance d Mode 
Extende d (SABME ) command  3.6.3  10.2.6.3  M  
Disconnec t (DISC ) command  3.6.4  10.2.6.4  M  
Unnumbere d Informatio n (UI) 
command  3.6.5  10.2.6.5  M  
Receiv e Read y (RR) 
command/response  3.6.6  10.2.6.6  M  
Rejec t (REJ ) command/response  3.6.7  10.2.6.7  M  
Receiv e Not Read y (RNR) 
command/response  3.6.8  10.2.6.8  M  
Unnumbere d Acknowledgemen t 
(UA) response  3.6.9  10.2.6.9  M  
Disconnecte d Mode (DM) response  3.6.10  10.2.6.1
0 M  
Fram e Rejec t (FRMR ) response  3.6.11  – M Note  
Exchang e Identificatio n (XID) 
command/response  3.6.12  – M Note  
NOTE .  TBR 3 does not suppor t FRMR respons e and XID command/response.  
 
 
Table  10.  Elements  for layer-to-layer communication  
 
Title ITU-T 
Rec. 
Q.921  ETSI 
TBR 3 CR Remarks  
Elements for layer-to-layer 
communication  4 – GID  
  MCMC  MTSFB TC T 008:2014 
16 Table 11.  Procedures for use by  the data link la yer 
 
Title ITU-T Rec. 
Q.921  ETSI 
TBR 3 CR Remarks  
Definition  of peer-to-peer 
procedures  for the data link layer 5 – GID  
Procedures  for the use of P/F bit 5.1 – – Heading  
Unacknowledged  information  
transfer  5.1.1  10.4.1  M  
Acknowledged  multiple  frame 
information  transfer  5.1.2  10.6 and 
10.7 M  
Procedure  for unackno wledged 
information  transfer  5.2 10.4 – Note 1  
Terminal Endpoint Identifier  (TEI) 
management  procedures  5.3 10.5 –  
General  5.3.1  10.5.1  M Note  2 
TEI assignment  procedure  5.3.2  10.5.2  M Note  2 
TEI check  procedure  5.3.3  – – Heading  
Use of TEI check  procedure  5.3.3.1  – NA  
Operation  of the TEI check  
procedure  5.3.3.2  10.5.3  M Note  3 
TEI removal  procedure  5.3.4  10.5.4  M Note  3 
TEI identity  verify  procedure  5.3.5  10.5.5  O Note  3 
Formats  and codes  5.3.6  10.5.6  – Note  3 
Initialisation  of data link layer 
parameters  5.4 – NA Note  4 
Procedure  for establishment  and 
release  of multiple  frame  
operation  5.5 10.6 – Heading  
Establishment  of multiple  frame 
operation  5.5.1  10.6.1  M  
Information  transfer  5.5.2  10.4, 10.7  
and 10.8  M Refer  to Clauses  5.2, 5.6 and 5.7 
Termination  of multiple  frame 
operation  5.5.3  10.6.2  –  
TEI-assigned  state  5.5.4  – M  
Collision  of unnumbered  
commands and  responses  5.5.5  10.6.3  –  
Unsolicited  DM response  and 
SABME  or DISC  command  5.5.6  – M  
Procedure  for information  
transfer in  multiple  frame  
operation  5.6 10.7 M  
Re-establishment  of multiple  
frame operation  5.7 10.8 –  
 
  MCMC  MTSFB TC T 008:2014 
17 Table 11.  Procedures for use by  the data link la yer (continued)  
 
Title ITU-T 
Rec. 
Q.921  ETSI 
TBR 3 CR Remarks  
Exception  condition  reporting  and 
recovery 5.8 10.9 
Note  5 GID  
List of system  parameters  5.9 10.10  GID  
Timer  T200  5.9.1  10.10.1  M The default  value  shall be 1 s. 
Max number  of retransmissions 
(N200)  5.9.2  10.10.2  M The default  value  shall be 3. 
Max number  of octets  in an 
information  field (N201)  5.9.3  10.10.3  M The default  value  shall be 260 octets. 
Max number  of transmission  of the 
TEI identity  request  message  
(N202)  5.9.4  10.10.4  M The default  value  shall be 3. 
Max number  of outstanding  I 
frames (k) 5.9.5  10.10.5  M For a SAP supporting  basic access  
signaling , the value  is 1. 
Timer  T201  5.9.6  – NA Network  requirement  
Timer  T202  5.9.7  10.10.6  M The default  value  shall be 2 s. 
Timer  T203  5.9.8  – O The default  value  is 10 s. 
– – 10.10.7
Note  6 GID Layer  2 response  time 
Data  link monitor  function  5.10 – O  
NOTES:  
1.  ‘NA’ if TE is an ISPBX  and supports  configuration  using  only a single  point -to-point  data link. 
2.  ‘NA’ if TE supports configuration using only a single point -to-point data  link. Requirements are applicable if TE is ISPBX.  
3.  ‘NA’ if TEI assignment  procedure  is ‘NA’.  
4.  The data link layer  paramete rs shall be initialised  to default  values.  
5.  TBR 3 considers  the receipt  of an invalid  N(R)  as the only condition  for frame  rejection.  
6.  The maximum  time between  receipt  of an incoming  frame,  and generation  of a response  shall not exceed  (a) 500 ms if 
operating  in a point -to-point  signaling  connection;  and (b) 200 ms for TEs in point- to-multipoin t configuration.  
 
  MCMC  MTSFB TC T 008:2014 
18 Table  12.  Annexes  and Appendices  
 
Title ITU-T Rec. 
Q.921  ETSI TBR 
3 CR Remarks  
Provision  for point -to-point  data 
link connection  Annex  A 10.3 M For single  point -to-point signaling  
connection  at layer  3, TEI  value  0 
shall be used  in co mbinatio n with 
SAPI 0. TEI management  procedures  
are not  applicable.  
An SDL representation  of the 
point -to- point  procedures  of data 
link layer  Anne x B – –  
SDL representation  of the 
broadcast procedures  of the data 
link layer  Annex  C – –  
State  transition  table  of the point -
to- point  procedures  of the data 
link layer  Annex  D – –  
Provision  of multi -selective  reject 
option  Anne x E – GID  
Protocol  Implementation  
Conformance Statement  (PICS)  
to Recommendation Q.921  for 
Basic  Rate  (User -side)  Anne x F – GID  
Protocol  Implementation  
Conformance Statement  (PICS)  
to Recommendation Q.921  for 
Basic  Rate  (Network -side)  Anne x G – GID  
Protocol  Implementation  
Conformance Statement  (PICS)  
to Recommendation Q.921  for 
Primary  Rate  (User -side)  Annex  H – NA  
Protocol  Implementation  
Conformance Statement  (PICS)  
to Recommendation Q.921  for 
Primary  Rate  (Network -side)  Anne x I – NA  
Inter-exchange signaling  data 
link layer protocol in Private 
Integrated Ser vices Networks 
(PISNs)  Annex  J 
(Q.921 
Amend -ment 
1) – GID Applicability and additions to frame 
structure, elements of procedures, 
formats of fields, elements for layer -
to-layer communication, peer -to-peer 
procedures to accommodate PISN 
inter-exchange requirements  
Retransmission  of REJ response 
frame  Appendi x I – NA  
 
  MCMC  MTSFB TC T 008:2014 
19 Table 12.  Annexe s and Appendices (continued)  
 
Title ITU-T 
Rec. 
Q.921  ETSI 
TBR 3 CR Remarks  
Occurrence  of MDL -ERROR - 
INDICATION  within  the basic  states  
& actions  to be taken  by the 
managemen t entity  Appendi x 
II – M  
Optional  basic  access  deactivation 
procedures  Appendi x 
III – NA May be used  by network  side system  
management  to control deactivation  of 
access  
Automatic  negotiation  of data link 
layer parameters  Appendi x 
IV – NA  
Inter-exchange signaling  data link 
layer protocol in PISNs  Appendi x 
V (Q.921 
Amend -
ment 1)  – GID Occurrence of the MDL -ERROR 
indication primitive in the data link 
layer protocol for the support of Inter -
exchange signaling  in PISNs  
  MCMC  MTSFB TC T 008:2014 
20 Section D  
 
Network layer requirements based on EN 300 403 -1 11/99, Integrated Services 
Digital Network (ISDN): Digital Subscriber Signaling System No.  One (DSS1) 
protocol: Signaling  network layer for circuit -mode basic call control; Part 1: 
Protocol Specification  [ITU-T Recommendation Q.931 (1993), modified]  
 
1. Introduction  
  
This section  contains clarification and recommended option selections for the ETSI ISDN standards 
and technical reports related to basic call control procedures of ISDN basic and primary 
acces s signaling. This document covers the basic call control of layers 1, 2 and 3. The aim of this 
document is to  avoid  unnecessary  options  and  vagueness  in  ISDN  implementations  and  
to  ensure  the interoperability of ISDN networks and terminal equip ment in Malaysia. This 
requirement has to be followed when implementing access -signaling protocol i.e. Digital Subscriber 
Signaling System No. 1 (DSS1).  
 
 
2. Supporting Information  
 
2.1 Integrated Services Digital Network (ISDN): Standards Guide (ETR 076 – December  1996,  
Fourth Edition)  
 
2.2 Integrated Services Digital Network (ISDN): Customer Access Maintenance (ETR 001  August  
1990)  
 
2.3 Integrated Services Digital Network: User –Network inter face layer 3 Specifications for  basic 
call control (ETS 300 102 -1 12/90)  
 
2.4 Integrated Services Digital Network  (ISDN): Digital Subscriber Signaling System No. (DSS1) 
protocol:  Data link layer; Part 2: General protocol spec ification [ITU -T Recommendation 
Q.921 (1993), modified]  (ETS 300 402 -2 11/95).  
 
2.5 Integrated Services Digital Network  (ISDN):Digital Subscriber Signaling System No. One 
(DSS1) protocol: Signaling  network layer for circuit -mode basic call control; Part 1: Protocol 
Specification [ITU -T Recommendation Q.931 (1993), modified] ) (ETS 300 403 -1 11/95)  
 
2.6 Integrated Services Digital Network  (ISDN): Digital Subscriber Signaling System No.One  
(DSS1) protocol: Signaling  network layer for circuit -mode basic  call control; Part 1: Protocol 
Specification [ITU -T Recommendation Q.931 (1993), modified]  (EN 300 403 -1 11/99).  
 
2.7 Integrated Services Digital Network  (ISDN): Digital S ubscriber Signaling System No. One 
(DSS1) Protocol:  Signaling Network Layer For Circuit -Mode Basic Call Control: Part 2: 
Specification and Description Language (SDL) Diagrams (ETS 300 403-2 11/95).  
 
2.8 Integrated Services Digital Network (ISDN) : Application Of The Bear er Capability (BC), 
High  Layer Compatibility (HLC) and Low Layer Compatibility (LLC) Information Elements 
By Terminals Supporting ISDN Services (ETR 018 11/95)  
 
2.9 ISDN User –Network Interface Layer 3 Specification for basic call control  (ITU-T Q.931  3/93)  
 
2.10 Technical Guidelines of ISDN Supplementary Services (Functional Protocol)  MCMC  MTSFB TC T 008:2014 
21 3. National Option Selections and Clarifications  
 
3.1 Layer One Protocol for Basic Call Control (DSS1)  
 
The DSS1 basic call layer one protocol for the basic access is contained in the standard ETS 300 012 
(10/98) and for the primary rate access in the standard ETS 300 011 (3/98)  
 
The ETSI technical report ETR 001(8/90) defines the maintenance requirement fo r basic and 
primary access.  
 
3.2  Layer Two Protocol for Basic Call Control (DSS1)  
 
The DSS1 basic call layer two protocol for the basic and primary access is contained in the 
standard ETS 300 402 -1 (11/95).  
 
It is recommended that a reset of layer 3 always reset layer 2 in    ISDN -terminal equipment. If 
layer 3 can be reset without resetting layer 2, an ISDN terminal which is reset during the active phase 
of a call, may lose control over that call.  
 
3.3  Layer Three Protocol for Basic Call Control (DSS1)   
 
The DSS1 layer three protocol for basic call control is contained in the base standard ETS 300 102 -1 
(12/90), ITU -T Q.931 (3/93), ETS 300 403 -1 (11/95) and EN 300 403 -1 (11/99).  ). The EN 300 403 -1 
(11/9 9) is a main standard for DSSI Layer 3 implementation.  
 
When implementing the DSS1 layer three protocol in Malaysia network, the following guidelines 
are recommended to be taken into account (The main numbering refers to the ITU -T Q.931 (3/93) , 
this standa rd had been adopted and extended by EN 300 403 -1 (11/99).  
 
 
Table 13. Appendices  
 
Clause No.  Clause Description  Recommendation  
2 OVERVIEW OF CALL 
CONTROL  SDL diagrams in the standard ETS 300 403 -2 (11/95) are 
recommended to be used as informative.  
3.1.3  CONNECT  The transport of low layer compatibility information element (LLC) to the 
calling user is supported on the ISDN end -to-end connections.  
 
The date/time information element is recommended to be sent by the 
network.  
3.1.6  INFORMATION  
 The use of Keypad f acility information element is defined in EN 300 
122-1 (6/98), "Integrated Services Digital Network (ISDN); Generic 
keypad protocol for the support of supplementary services; Digital 
Subscriber Signaling  System No. One (DSS1) protocol; Part 1: Protocol 
Specification ".  
 
  MCMC  MTSFB TC T 008:2014 
22 Table 13. Appendices (continued)  
 
  Clause No.  Clause Description  Recommendation  
3.1.14  SETUP  Annex E (network specific facility selection) and Annex C (transit 
network selection) are not applicable. Transit network selection is 
implemented in the DSS1 signaling by using operator codes in the 
called number digits (operator code + called party number).  
 
The use of Keypad facility information element is defined in EN 300 
122-1 (6/98).  
 
Two bearer capability information elements are supported (EN 300 
403-1 (11/99), subclause 5.11).  
 
Two high layer compatibility information elements are supported (EN 
300 403 -1(11/99), subclause 5.12)  
4 General message 
format and information 
elements coding   
4.4 MESSAGE TYPE  No national message types are defined.  
4.5.1.1 (EN 
300 403 -1 
11/99)  Codeset 0  Information elements Network specific facilities, Transit network 
selection and Escape for extension are not applicable.  
4.5.2 Extension of codesets  No information elements belonging to codeset 6 (national) are defined.  
4.5.7 Call state  Only CCITT standardized coding is used.  
4.5.8 Called party number  Type of number: Code  point showing "subscriber number" shall be 
used from network to user.  
 
The code  point used  in  connection  with  the supplementary  services  
Direct Dialing In (DDI) and Multiple Subscriber Number (MSN) is 
specified in a separate  document   for    ISDN   supplementary 
services   Technical   Guidelines   of  ISDN Supplementary 
Services(Functional Protocol)  
4.5.10  Calling party number  
 The use of the fields is subject to a separate document for ISDN 
supplementary services Technical Guidelines of ISDN Supplementary 
Services(Functional Protocol)  
4.5.12  Cause  Coding standard :  Codepoints showing “CCITT standardized coding” 
and "National standard" may be used.  
 
No national cause values are defined.  
4.5.13  Channel identification  Coding standard: CCITT standardized coding is always used  
4.5.15  Date/time  The date/time indicated is local date / time  
4.5.21  Network specific 
facilities  Not applicable.  
4.5.22  Progress indicator  Coding standard: CCITT standardized coding is always used . MCMC  MTSFB TC T 008:2014 
23 Table 13. Appendices (continued)  
 
Clause No.  Clause Description  Recommendation  
4.5.29 Transit network selection  Not applicable.  
Transit  network  selection  is  implemented  in  the  DSS1  signaling  
by  using operator codes in  the  called  number  digits  (operator  
code +  called  party number)  
5 CIRCUIT -SWITCHED 
CALL CONTROL 
PROCEDURES  Optional extensions to the basic protocol and exceptions that apply in 
the case of supplementary services are not subject to this guideline 
document.  
An INFORMATION message received in the Release Request 
State shall be ignored.  
5.1.1 Call request  The network shall recognize both the sending complete information 
element and the "#" character.  
5.1.3 Overlap sending  In case (a) the dial tone option with Progress Indicator #8 is applied  
5.1.10  Transit network selection  Not applicable.  
Transit  network  selection  is  implemented  in  the  DSS1  signaling  
by  using operator codes  in  the  called  number  digits  (operator  
code   + called  party number).  
5.2 CALL 
ESTABLISHMENT AT 
THE DESTINATION 
INTERFACE  
 It is recommended for the basic access that a timer is 
implemented on the network side in order to ensure that layer 2 is 
released if during a time period, (e.g. 10 -15 seconds) no layer 3 
connections are present on the data link.  
 
In special cases, e.g. NT2, data link connections may be 
established as soon as TEI is assigned (either locally or by the 
automatic assignment procedure), and may be retained indefinitely.  
 
It is recommended that a reset of layer 3 always reset layer 2 in  
ISDN -terminal equipment. If layer 3 can be reset without resetting 
layer 2, an ISDN terminal which is reset during the active phase of a 
call, may lose control over that call.  
5.2.1  Incoming call  The network shall have the knowledge that a single -point 
configuration exists, and that information is entered at the time of 
configuration of the access.  
5.2.3.1  SETUP message 
delivered by point -to-
point data link  Only options 1) "channel is indicated, no acceptable alternative" and 
4) "no B channel available" are used.  
5.2.4  Overlap receiving  In overlap receiving the network cannot in all cases determine that 
sufficient call setup information has been received, and the 
Sending complete information element is not required ( Refer to 
Technical Guidelines of   ISDN Supplementary Services (Functional 
Protocol),  
DDI).  
  MCMC  MTSFB TC T 008:2014 
24 Table 13. Appendices  (continued)  
 
Clause No.  Clause Description  Recommendation  
5.2.6  Notification of 
interworking at the 
terminating interface  
 Concerning the first subsection a) the normal call handling 
procedures shall be applied at the terminating exchange (i.e. the 
terminating exchange shall only through -connect after a CONNECT 
message has been received from the called user).  
5.2.7  Call accept  In case the private exchange has diverted the speech call it is 
recommended that the Calling party is informed of the diversion 
(with an announcement) if the private exchange sends the call 
acceptance message (CONNECT) towards the Calling party before 
the call acceptance message has been received from the diverted 
connection. This in -band information is given immediately after the call 
acceptance message sending.  
 
Note:  Establishment of the bearer connection prior to call 
acceptan ce is described in ETS 300 403 -1 Annex K. If this 
procedure is applied then the in band information is given prior the call 
acceptance message sending.  
5.3.4.1  Clearing   when 
tones/announcements 
provided  In order to receive the inband information it is re commended that 
the user connects to the B -channel on receipt of the 
DISCONNECT message with progress indicator No. 8.  
5.3.4bis (EN 
300 403 -1 
11/99)  Absence of response 
during call clearing  In case a B -channel is placed in a maintenance condition, the actions 
to be taken are described in subclause 5.5.  
5.6.1  Call suspension  When the call identity is used, it is recommended for the terminals to 
use IA5 -coded characters.  
5.6.2  Call suspended  When the call identity is used, it is recommended for the terminals to 
use IA5 - coded characters.  
5.6.5  Call resume errors  The network shall preserve the call identity along with a clearing 
cause during the period of timer T307.  
5.8.5.1  Information element out 
of sequence  The network is not required to process information elements 
received out of sequence  
5.8.5.2  Duplicated information 
elements  
 The BC (Bearer Capability) and HLC (High Layer Compatibility) 
information elements may be duplicated in the SETUP message (EN 
300 403 -1 (11/99), subclause 5.11 and 5.12).  
5.8.7.2  
 Non-mandatory 
information element 
content error  Information elements exceeding the maximum length shall not be 
truncated and processed except the call identity information element.  
5.8.9  Data link failure  It is recommended that the network transmits a STATUS ENQUIRY 
message when layer 2 is re -established.  
5.11 Signaling  procedures for 
bearer capability 
selection  Supported on ISDN end -to-end connections (i.e. the network signaling 
system is ISUP).  
  MCMC  MTSFB TC T 008:2014 
25 Table 13. Appendices  (continued)  
 
Clause No.  Clause Description  Recommendation  
5.12 Signaling  procedures for 
high layer compatibility 
selection  Supported on ISDN end -to-end connections (i.e. the network signaling  
system is ISUP).  
9.1 Timers in the network 
side Timer No. 302 : Time -out value is 5s  
9.2 Timers in the user side  Timer No. 301 : Time -out value is 3 min.  
Annex B  Compatibility and 
address checking   
B.1 INTRODUCTION  Codings of BC, HLC and LLC are subject to the ETR 018 (11/95).  
B.3.1  COMPATIBILITY 
CHECKING WITH 
ADDRESSING 
INFORMATION  Called party number (whole subscriber number) is always 
included in the SETUP message from the network to user in point -to-
multipoint configurations.  
 
Compatibility checking with addressing information should be used in 
terminals, since otherwise it may restrict the use of several terminals 
in the same access or the use of multi -service terminals. (Further 
information can be found in the supplementary services guideline 
document Technical Guidelines of    ISDN Supplementary Services 
(Functional Protocol), e.g. Multiple Subscriber Number supplementary 
service).  
B.4 INTERWORKING WITH 
EXISTING NETWORKS  When a Progress indicator information element #1 or #3 is sent to 
the terminal equipment, the network will not send the High layer or 
Low layer compatibility information elements to the terminal 
equipment. The terminal equipment should in this case use 
compatibility checking only with Addressing Information and Bearer 
Capability. Whe n the High layer and/or Low layer information 
elements are sent to the terminal equipment, the terminal equipment 
shall use them in the compatibility checking.  
Annex C  Transit network selection  Not applicable.  
 
Annex D  Extensions for 
symmetric call operation  Not applicable.  
 
Annex E  Network specific facility 
selection  Not applicable.  
 
Annex F  D-channel backup 
procedures  Not applicable.  
 
Annex J  Low layer compatibility 
negotiation  The transport of LLC to the calling user is only supported on the ISDN 
end-to-end connections.  
Annex I  Definition of causes 
values  Applicable after taking into account the national selections 
(concerning cause values, messages etc.) made in this guideline 
document.  
 
  MCMC  MTSFB TC T 008:2014 
26 4.  Terminal Characteristics Related to Access Signaling  
 
Terminal characteristics related to access signaling  and used for type approval purposes are  
contained in  standards ETS  300 085(12/90), ETS 300 087 (4/94), ETS 300 104 (6/94), NET 003 
(9/95), NET 005 (9/95), I -ETS 300 245 -1 (2/96), TBR 003 (11/95), TBR 003/A1 (2/98), TBR 004 
(11/95), TBR 004/A1 (2/98), TBR 008(9/94), TBR 008(10/98), TBR 008/C2 (2/2001) and th e 
corresponding CTRs.  
 
 
5.  Terminal Adaptors  
 
5.1  Circuit Mode Bearer Services  
 
Terminal adaptor functions and associated access signaling  requirements for circuit mode bearer  
services are contained in the standard ETS 300 103 (12/90).  
  MCMC  MTSFB TC T 008:2014 
27 Section E  
 
Digital Transmission System on Metallic Local Lines for ISDN Basic Rate 
Access (ITU-T Recommendatio n G.96 1 03/1993)  
 
 
Table 14 .  Digital transmission system on metallic local lines for ISDN basic rate access  
 
Title ITU-T 
Rec. 
G.961  ETSI ETR 
080 CR Remarks  
General  1 1 to 3 GID  
Functions  2 4 M Bit timing shall be derive d from the 
clock receive d by the NT1 from LT. 8 
kHz octet timing is derive d from fram e 
alignment. Remot e powe r feedin g is 
supported.  
Transmissio n Medium  3 5 GID The transmissio n mediu m is the local 
line distributio n network.  
System Performance  4 6 GID  
Transmissio n method  5 7 M Duple x transmissio n on 2-wire metalli c 
local lines shall be achieved throug h 
the use of Echo Cancellation (ECH).  
Activation / Deacti vation  6 8 – Heading  
General  6.1 8.1 GID  
Physical representatio n of signals  6.2 8.2 M The signal s used in the DTS are in 
accordanc e with the requirement s for 
a syste m using 2B1Q line code as 
given in Appendi x II/ G.961.  
Operatio n and Maintenance  7 9 – Heading  
Operatio n and maintenance functions  7.1 9.1 GID  
CL channel  7.2 9.2 M  
Power Feeding  8 10 – Heading  
General  8.1 10.1 GID  
Power feedin g options  8.2 10.2 M Powe r feedin g of NT1 (to TE) under 
norma l condition s will be provide d by 
the AC main s power.  
O A restricte d conditio n will be entered 
into when AC main s powe r at the NT 1 
fails. 
Power feedin g and recovery methods  8.3 – GID  
DLL resistance  8.4 10.3 GID  
Wettin g current  8.5 10.4 O The NT1 shall sink a curren t of at leas t 
200µA in its operatin g voltage range.  
  MCMC  MTSFB TC T 008:2014 
28 Table 14.  Digital transmission system on metallic local lines for ISDN basic rate access 
(continued)  
 
Title ITU-T 
Rec. 
G.961  ETSI ETR 
080 CR Remarks  
LT aspects  8.6 10.5 M The NT1 shall be able to work with D C 
input voltage s of  95 V coming fro m 
the DLL. 
Power requirement s of NT1 an d 
regenerator  8.7 10.6 – Heading  
Power requirement s of NT1 8.7.1  10.6.1  M  
Power requirement s of regenerator  8.7.2  10.6.2  NA  
Curren t transien t limitation  8.8 10.7 M < 1 mA/µs 
Environmenta l Conditions  9 11 GID  
 
 
Table  15.  Core  requirements  for a system  using 2B1Q  line code  (ITU-T Rec.  Q.961  Appendix  II) 
 
Title ITU-T 
Rec. 
G.961  ETSI ETR 
080 CR Remarks  
Line code  II.1 A.1 M The line code shall be 2B1Q (2 binary , 
1 quaternary).  
Line baud rate II.2 A.2 M The line symbo l rate is 80 kbauds.  
Clock toleranc e II.2.1  –  Heading  
NT1 clock toleranc e II.2.1.1  A.2.1  M ±100 ppm NT 1 shall operat e with the 
received signa l baud rate in the range 
of 80 kbau d  ±5 ppm.  
LT clock toleranc e II.2.1.2  A.2.2  GID ±5 ppm 
REG clock tolerance  – A.2.3  GID  
Fram e structure  II.3 A.3 M Figur e II.2/G.961  
Fram e length  II.3.1  A.3.1  M 120 quaternary  
Bit allocatio n in directio n LT-NT1 II.3.2 A.3.2  M Figure s II.1/G.96 1 and II.2/G.961  
Bit allocatio n in directio n NT1-LT II.3.3  A.3.3  M Figure s II.1/G.96 1 and II.2/G.961  
Fram e word II.4 A.4 M  
Fram e alignmen t procedure  II.5 A.5 M The time limits specified in II.10 shall 
be met.  
Multiframe  II.6 A.6 M A multiframe is used to enable the 
allocation of the CL-channel bits over 
more than one frame.  
 
  MCMC  MTSFB TC T 008:2014 
29 Table 15.  Core requirement s for a system using 2B1Q line code (ITU-T Rec. Q.96 1 Appendi x II) 
(continued)  
 
Title ITU-T 
Rec. 
G.961  ETSI ETR 
080 CR Remarks  
CL-channel  II.8 A.8 M The bit rate for the CL-channel is 4 
kbit/s. 
Bit rate II.8.1  A.8.1  M  
Structure  II.8.2  A.8.2  M Figur e II.3/G.961  
Protoco l and procedures  II.8.3  A.8.3  M Figur e II.3/G.961  
Error monitorin g functions  II.8.3.1  A.8.3.1  M  
Othe r CL- channe l functions  II.8.3.2  A.8.3.2  M  
Far end block error (FEBE ) bit. 
mandatory  II.8.3.2.1  A.8.3.2.1  M  
The ACT bit, mandatory  II.8.3.2.2  A.8.3.2.2  M  
The DEA bit, mandatory  II.8.3.2.3  A.8.3.2.3  M  
NT1 powe r status bits II.8.3.2.4  A.8.3.2.4  O  
NT1 test mode indicato r (NTM) bit II.8.3.2.5  A.8.3.2.5  O  
Cold-start-only (CSO ) bit II.8.3.2.6  A.8.3.2.6  O  
DLL-only-activatio n (UOA ) bit II.8.3.2.7  A.8.3.2.7  O  
S/T-interface -activity -indicator (SAI) 
bit II.8.3.2.8  A.8.3.2.8  O  
Alarm indicato r bit (AIB)  II.8.3.2.9  A.8.3.2.9  O  
Networ k indicato r bit (NIB) for 
networ k use II.8.3.2.10  A.8.3.2.10  M The NT1 shall alway s set this bit to 
binar y ONE in SN3.  
Reserve d bits II.8.3.2.11  A.8.3.2.11  M  
Embedde d operation s channel 
(EOC ) functions  II.8.3.3  A.8.3.3  M  
Scrambling  II.9 A.9 M  
Start-up and control  II.10 A.10 Note M The NT1 shall be able to suppor t both 
cold-start and warm -start.  
Signal s used for start-up and control  II.10.1  A.10.1  M  
Timers  II.10.2  A.10.2  M  
Descriptio n of the start-up procedure  II.10.3  A.10.3  M Heading  
State transition table for the NT1  II.10.4  A.10.4  M  
State transitio n table for the LT II.10.5  A.10.5  GID  
Activatio n times  II.10.6  A.10.6  M  
  MCMC  MTSFB TC T 008:2014 
30 Table 15.  Core requirement s for a system using 2B1Q line code (ITU-T Rec. Q.96 1 Appendi x II) 
(continued)  
 
Title ITU-T 
Rec. 
G.961  ETSI ETR 
080 CR Remarks  
Jitter  II.11 A.11 M  
Input signa l jitter tolerance  II.11.1  A.11.1  M Figur e II.10/G.961  
NT1 outpu t jitter limitations  II.11.2  A.11.2  M  
LT input signa l jitter tolerance  II.11.3  A.11.3  GID  
LT outpu t jitter and synchronisation  II.11.4  A.11.4  GID  
Test condition s for jitter measurement  II.11.5  A.11.5  GID  
Transmitte r output characteristic s of 
NT1 and LT II.12 A.12 M Load impedance of 135 ohms 
resistive over a frequency band of 0 
Hz to 160 kHz  
Pulse amplitude  II.12.1  A.12.1  M 2.5 V (Figur e II.11/G.961)  
Pulse shape  II.12.2  A.12.2  M The transmitted pul se shall ha ve the 
shape specified in Figure II.11/G.961. 
The pulse mask for the four 
quaternary symbols shall be obtained 
by multiplying the normalized pulse 
mask shown in Figure II.11 by 2.5 V, 
5/6 V, –5/6 V or –2.5 V.  
Signa l power  II.12.3  A.12.3  M Between 13.0 dBm and 14.0 dBm 
over the frequency band from 0 Hz to 
80 kHz  
Powe r spectra l density  II.12.4  A.12.4  M Figur e II.12/G.961  
Transmitte r linearity  II.12.5  A.12.5  M  
Transmitter/recei ver termination      II.13 A.13 – Heading  
Impedance  II.13.1  A.13.1  M 135  
Retur n loss II.13.2  A.13.2  M Figur e II.14/G.961  
Longitudina l conversio n loss II.13.3  A.13.3  M Figur e II.15/G.961  
NOTE :  The use of cold-start-only transceiver s is outsid e the scope of ETR 080. 
 
  MCMC  MTSFB TC T 008:2014 
31 Table  16.  Extension  functions  of the system  using  2B1Q  line code   
(Annex  A to ITU-T Rec.  Q.961 Appendix  II) 
 
Title ITU-T 
Rec. 
G.961  ETSI ETR 
080 CR Remarks  
Introduction  A.II.1  I-1 GID  
NT1 powe r status bits A.II.2  I-2 O  
NT1 test mode indicato r (NTM ) bit A.II.3  I-3 O  
Cold-start-only (CSO ) bit A.II.4  I-4 O  
DLL-only -activatio n (UOA ) bit A.II.5  I-5 O  
S/T-interface -activity -indicator (SAI) 
bit A.II.6  I-6 O  
Alarm indicato r bit (AIB)  A.II.7  I-7 O  
Longitudina l outpu t voltage  A.II.8  – GID  
NT1 maintenanc e modes  A.II.9  – O  
NT1 Quiet Mode  A.II.9.1  – O  
Insertio n Loss Measuremen t Test A.II.9.2  – O  
NT1 Quiet Mode and Insertion Los s 
Measuremen t Test trigger signal  A.II.9.3  – O  
Dc signaling  format  A.II.9.4  – O  
Low frequenc y ac signaling  format  A.II.9.5  – O  
 MCMC  MTSFB TC T 008:2014 
32 Annex A  
(Normative)  
 
 
Normative References  
 
 
Erratum1 (02/2003) to  ITU-T 
Rec. Q.931  ISDN User -Network Interface Layer 3 Specification for Basic Call 
Control  
ETR 080 Nov 96  Digital transmission system on metallic local lines  
ETSI TBR 3 Nov 95  Attachment requirements for terminal equipment to connect to an 
ISDN using ISDN basic access  
ETSI TBR 3 A1 Dec 97  This amendment A1 modifies the TBR 3 (1995)  
IEC 60950 -1: 2001  Information Technology Equipment – Safety  
IEC CISPR 22: 2003 -04 Information Technology Equipment – Radio disturbance 
characteristics – Limits and methods of measurement  
ITU-T Rec. I.430 (11/95)  Basic User -Network Interface – Layer 1 Specification  
ITU-T Rec. Q.921 (09/97)  ISDN User -Network Interface – Data Link Layer Specification  
ITU-T Rec. Q.921  
Amendment 1 (02/2000)  ISDN User -Network Interface – Data Link Layer Specif ication 
Amendment  1 
[ITU-T Recomme ndation 
Q.931 (1993), modified] (EN 
300 403 -1 11/99)  Integrated Services Digital Network (ISDN): Digital Subscriber 
Signaling  System No.  One (DSS1) protocol: Signaling  network layer 
for circuit -mode basic call control; Part 1: Protocol Specification  
ITU-T Rec. Q.931  
Amendment 1 (05/98)  ISDN User -Network Interface Layer 3 Specification for Basic  
Call Control Amendment 1  
Extensions for the support of digital multiplexin g equipment  
ITU-T Rec. G.961 03/93  Digital Transmission System on Metallic Local Lines for ISDN Basic  
Rate Access  
 
 
NOTES:  
 
ETSI   Europea n Telecommunication s Standard s Institute  
ETR   ETSI Technica l Report  
IEC   Internationa l Electro -technica l Commission  
ITU-T  Internationa l Telecommunicatio n Union – Telecommunicatio n Sector  
TBR   Technica l Basis for Regulation  
  MCMC  MTSFB TC T 008:2014 
33 Annex B  
(Informative)  
 
 
TECHNICAL GUIDELINES  OF ISDN SUPPLEMENTAR Y SERVICE  
 
 
B1 Introduction  
 
This section  contains clarifications and recommended option selections for the ETSI ISDN standards 
related to ISDN supplementary services. This document covers the implementation of ISDN 
supplementary services using functional protocol. The aim of this document is to avoid 
unnecessary options and vagueness in ISDN implementations and to ensure the interoperability of 
ISDN networks and terminal equipment in Malaysia.  
 
 
B2 Supporting Information  
 
B2.1 Integrated  Services Digital Network  (ISDN); Multiple Subscriber Number (MSN) 
supplementary  service; Service Description (ETS 300 050, October 1991)  
 
B2.2  Integrated  Services Digital Network  (ISDN); Mul tiple Subscriber Number (MSN) 
supplementary  service; Functional capabilities and information flows (ETS 300 051, October 1991)  
 
B2.3 Integrated  Services Digital Network  (ISDN); Multiple Subscriber Number (MSN) 
supplementary  service; Digital Subscriber Signaling  System No. one (DSS1) protocol (ETS 300 052 -1, 
October 1991)  
 
B2.4  Integrated  Services Digital Network (ISDN); Terminal Portability (TP) supplementary service; 
Service  Description (ETS 300 053, October 1991)  
 
B2.5  Integrated  Services Digital Network (IS DN); Terminal Portability (TP) supplementary service;  
Functional capabilities and information flows (ETS 300 054, October 1991)  
 
B2.6 Integrated Services Digital Network (ISDN); Terminal Portability (TP) supplementary service; 
Digital  Subscriber Signaling  System No. one (DSS1) protocol (ETS 300 055 -1, October 1991)  
 
B2.7 Integrated  Service Digital Network  (ISDN); Call Waiting (CW) supplementary service; 
Service  Description (ETS 300 056, October 1991) and Amendment A1 (September 1996)  
 
B2.8 Integrated Services Digital Network  (ISDN); Call Waiting (CW) supplementary service; 
Functional  capabilities and information flows (ETS 300 057, May 1992)  
 
B2.9 Integrated  Services Digital Network  (ISDN); Call Waiting (CW) supplementary service; Digital  
Subscriber Signaling  System No. one (DSS1) protocol (ETS 300 058 -1, October 1991)  
 
B2.10  Integrated  Services Digital Network (ISDN); Sub -addressing (SUB) supplementary service; 
Service  Description (ETS 300 059, October 1991)  
 
B2.11 Integrated Services Digital Network (ISDN); Sub -addressin g (SUB) supplementary  
service; Functional  capabilities and information flows (ETS 300 060, October 1991)  
  MCMC  MTSFB TC T 008:2014 
34 B2.12 Integrated Services Digital N etwork (ISDN); Sub -addressing (SUB) supplementary service; 
Digital  Subscriber Signaling  System No. one (DSS1) protocol (ETS 300 061 -1, October 1991)  
 
B2.13 Integrated Services Digital Ne twork (ISDN); Direct Dialing In (DDI) supplementary service; 
Service  Description (ETS 300 062, October 1991)  
 
B2.14 Integrated Services Digital Network  (ISDN); Direct Dialling  In (DDI) supplementary service;  
Functional capabilities and information flows (ETS 300 063, October 1991)  
 
B2.15 Integrated Services Digital Network (ISDN); Direct Dialing In (DDI) supplementary service; 
Digital  Subscriber Signaling  System No. one (DSS1) protocol (ETS 300 064 -1, October 1991)   
 
B2.16 Integrated  Services Digital Network (ISDN); Calling Line Identification Presentation  (CLIP)  
supplementary service; Service description (ETS 300 089, January 1992)  
 
B2.17  Integrated  Services Digital Network (ISDN); Calling Line Identification Restriction  (CLIR)  
supplementary service; Service description (ETS 300 090, January 1992)  
 
B2.18  Integrated  Services  Digital Network  (ISDN); Calling Line Identification Presentation  (CLIP) 
and Calling Line Identification Restriction  (CLIR) supplementary services; Functional capabilities 
and information flows (ETS 300 091, March 1992)  
 
B2.19 Integra ted Services Digital Network (ISDN); Calling Line Identification Presentation  (CLIP)  
supplementary service; Digital Subscriber Signaling System No. one (DSS1) protocol (ETS 300 092 -1, 
March 1992), Amendment A1 (April 1993) and Amendment A2 (November 1994)  
 
B2.20  Integrated  Services  Digital Network (ISDN); Calling Line Identification  Restriction  (CLIR)  
supplementary service; Digital Subscriber Signaling System No. one (DSS1) protocol (ETS 300 093 -1, 
March 1992)  
 
B2.21  Integrated  Services Digital  Network  (ISDN);  Connected Line Identification Presentation  
(COLP)  supplementary service; Service description (ETS 300 094, January 1992)  
 
B2.22  Integrated  Services Digital Network  (ISDN); Connected Line Identification Restriction  (COLR)  
supplementary service; Service description (ETS 300 095, January 1992)  
 
B2.23 Integrated Services Digital Network (ISDN); Connected Line Identification Presentation 
(COLP) and  Connected Line Identification Restriction (COLR) supplementary services; Functional 
capabilities and  information flows (ETS 300 096, May 1992)  
 
B2.24  Integrated  Services Digital  Network  (ISDN) ; Connected Line Identification  Presentation  
(COLP)  supplementary service; Digital Subscriber Signaling System No. one (DSS1) protocol (ETS 
300 097 -1, March 1992) and Amendment A1 (November 1994)  
 
B2.25  Integrated  Services Digital Network  (ISDN); Connected Line Identification Restriction  (COLR)  
supplementary service; Digital Subscriber Signaling System No. one (DSS1) protocol (ETS 300 098 -1, 
May 1992)  
 
B2.26 Integrated Services Digital Network (ISDN); Malicious Ca ll Identification (MCID) 
supplementary  service; Service description (ETS 300 128, May 1992)  
 
B2.27 Integrated Services Digital Network (ISDN); Malicious Call Identification  (MCID) 
supplementary  service; F unctional capabilities and information flows (ETS 300 129, May 1992)  
  MCMC  MTSFB TC T 008:2014 
35 B2.28 Integ rated Services Digital Network (ISDN);  Malicious Call Identification (MCID) 
supplementary  service; Digital Subscriber Signaling System No. one (DSS1) protocol (ETS 300 130 -1, 
May 1992)  
 
B2.29  Integrated  Services Digital Network (ISDN); Closed User Group (CUG) supplementary service; 
Service  description (ETS 300 136, March 1992)  
 
B2.30 Integrate d Services Digital Network  (ISDN); Closed User Group  (CUG) supplementary 
service;  Functional capabilities and information flows (ETS 300 137, May 1992)  
 
B2.31 Integrated  Services Digital Network (ISDN); Closed User Group (CUG) supplementary service; 
Digital  Subscriber Signaling System No. one (DSS1) protocol (ETS 300 138 -1, May 1992) and 
Amendment  A1 (January 1996)  
 
B2.32  Integrated  Services Digital Network  (ISDN); Call Hold (HOLD) supplementary service; 
Service  description (ETS 300 139, March 1992)  
 
B2.33 Integrated Services Digital Network (ISDN); Call Hold (HOLD) supplementary service; 
Functional  capabilities and information flows (ETS 300 140, May 1992)  
 
B2.34 Integrated  Services Digital Network  (ISDN); Call Hold  (HOLD) 
supplementary service; Digital  Subscriber Signaling System No. one (DSS1) protocol  (ETS 300 141 -
1, May  1992) including  Corrigendum (August 1993)  
 
B2.35  Integrated  Services Digital Network (ISDN); Advice of Charge: charging information at call set -
up time (AOC -S) supplementary service; Service description (ETS 300 178, October 1992)  
  
B2.36 Integrated Services Digital Network (ISDN); Advice of Char ge: charging infor mation during 
the call (AOC -D) supplementary service; Service description (ETS 300 179, October 1992)  
 
B2.37 Integrated Services Digital Network (ISDN); Advice of Charge: charging information at the end 
of the call (AOC -E) supplementary service; Service description (ETS 300 180, October 1992)  
 
B2.38 Integrated Services Digital  Network  (ISDN); Advice of Charge (AOC) supplementary service;  
Functional capabilities and information flows (ETS 300 181, April 1993)  
 
B2.39 Integrated Services Digital Network (ISDN); Advice of Charge (AOC) supplementary service; 
Digital  Subscriber Signaling System No. one (DSS1) protocol (ETS 300 182 -1, April 1993)  
 
B2.40  Integrated Services Digital  Network  (ISDN); Three -Party  (3PTY) supplementary service; 
Service  description (ETS 300 186, July 1993)  
 
B2.41 Integrated Services Digital Network (ISDN); Three -Party (3PTY) supplementary service; 
Functional  capabilities and information flows (ETS 300 187, August 1993)  
 
B2.42  Integra ted Services Digital Network  (ISDN); Three -Party (3PTY) supplementary service; 
Digital  Subscriber Signaling System No. one (DSS1) protocol (ETS 300 188 -1, August 1993)  
 
B2.43 Integrated Services Digital Network (ISDN); Supplementary Service Interactions; Digital 
Subscriber  Signaling System No. one (DSS1) protocol, Part 1: Protocol specification (ETS 300 195 -
1, February  1995)  
 
  MCMC  MTSFB TC T 008:2014 
36 B2.44 Integrated Services Digital Network  (ISDN); Generic functional protocol for the support of 
supplementary services; Digital Subscriber Signaling System No. one (DSS1)  protocol   
(ETS 300 196 -1, August 1993) and Amendment A1 (May 1995)  
 
B2.45 Integrated Services Digital Network (ISDN); Call Forwarding Busy (CFB) supplementary 
service;  Service description (ETS 300 199, December 19 94) 
 
B2.46 Integrated Services Digital Network (ISDN) ; Call Forwarding Unconditional  (CFU) 
supplementary  service; Service description (ETS 300 200, December 1994)  
 
B2.47 Integrated Services Digital Network  (ISDN); Call Forwarding No Reply (CFNR) 
supplementary  service; Service description (ETS 300 201, December 1994) and Amendment A1 
(September 1996)  
 
B2.48 Integrated Services Digital Network  (ISDN); Call Forwarding Busy (CFB) supplementary 
service; Functional capabilities and information flows (ETS 300 203, December 1994)  
 
B2.49 Integrated Services Digital Network (ISDN) ; Call Forwarding Unconditional  (CFU) 
supplementary  service; Functional capabilities and information flows (ETS 300 204, December 1 994)  
 
B2.50 Integrated Services Digital  Network  (ISDN); Call Forwarding No R eply (CFNR) 
supplementary  service; Functional capabilities and information flows (ETS 300 205, December 1994)  
 
B2.51 Integrated Services Digital Network  (ISDN); Diversion supplementary services; Digital 
Subscriber  Signaling No. one (DSS1) protocol (ETS 300 207 -1, December 1994) and Corrigendum 
(June 1995)  
 
B2.52 Integrated Services Digital Network  (ISDN); User -to-user signaling (UUS) supplementary 
service;  Service description (ETS 300 284, March 1996)  
 
B2.53 Integ rated Services Digital Network (ISDN); User -to-user signaling (UUS) supplementary 
service;  Functional capabilities and information flows (ETR 285, March 1996)  
 
B2.54 Integ rated Services D igital Network (ISDN); User -to-user signaling (UUS) supplementary 
service; Digital Subscriber Signaling one (DSS1) protocol (ETS 300 286 -1, February 1993)  
 
B2.55 Integrated Services Digital Network  (ISDN); Explicit Call Transfer (ECT) supplementary 
servic e; Service description (EN 300 367, V1.2.1, October 1998)  
 
B2.56 Integrated Services Digital Network (ISDN); Explicit Call Transfer  (ECT) supplementary 
service; Functional capabilities and information flows (EN 300 368, V1.2.2, December 1998)  
 
B2.57 Integ rated Services Digital Network (ISDN); Explicit Call Transfer (ECT) supplementary 
service; Digital Subscriber Signaling one (DSS1) protocol (EN 300 369 -1, V1.2.4, October 1998)  
 
  MCMC  MTSFB TC T 008:2014 
37 B3. National Option Selections and Clarifications  
 
 
B3.1 Generic functional  protocol for the support of supplementary services  
 
The supplementary services of this specification are based on the funct ional protocol. Therefore, the 
public network shall support the generic part of the functional protocol according to ETS 300 196 -1 
[44].  
 
Only those functions need to be implemented, which are required to support the selected 
supplementary services. Network options of ETS 300 196 -1 are left as implementation options, unless 
stated otherwise in the Sub clauses relating to the individual supplementary services. Should any 
conflict arise between ETS 300 196 -1 and the specifications in Sub clause 3.2 to 3.16, then the 
text of the individual supplementary services shall be taken as definitive.  
 
B3.2 Multiple Subscriber Number (MSN)  
 
B3.2.1  Definition  
 
The Multiple Subscriber Number (MSN) supplementary service provides the possibility for assigning 
multiple numbers to a single public or private access.  
 
NOTE: This allows e.g.:  
 
1) A calling user to select, via the public network, one or multiple distinct terminals out of multiple choices;  
2) To identify the  terminal  to  the  network  for  the  application  of  other  supplementary services.  
 
B3.2.2  Service Description  
 
The service description (stage 1 description) for the MSN supplementary service is contained in 
the standard ETS 300 050 [1].  
 
The following gives the recommended guidelines for the implementation of the MSN supplementary 
service in the Malaysian network.  
 
 
Clause 5 and sub clause 6.2.3  The multiple subscriber number provided by the calling party shall be 
the full ISDN subscriber number.  
 
The called party number to be transmitted to the user's installation 
shall comprise the full ISDN subscriber number  
Sub clause 6.1  The maximum number of MSNs per access shall be 16  
Sub clause 7.2  The MSN supplementary service can apply at an access to a private 
ISDN (e.g. when the public network does not know what equipment is 
connected to the access).  
Clause 8  Supple mentary services can be individually assigned to each MSN 
number.  
Sub clause 8.9  Subscription  to  the  DDI  supplementary  service  and  the  MSN  
supplementary service  is mutually exclusive.  
 
  MCMC  MTSFB TC T 008:2014 
38 Additional requirement  
 
On outgoing calls, when the scr eening of the calling party number is successful, the CLI to be 
recorded in the charging record shall be the MSN number provided by the calling party. If the number 
screening is unsuccessful, the default ISDN number of the access shall be recorded in the c harging 
record.  
 
B3.2.3  Functional Capabilities and Information Flows   
 
The functional capabilities and information flows (stage 2 description) for the MSN supplementary 
service are contained in the standard ETS 300 051 [2]. The stage  2 description can be taken as 
informative. The implementation of the MSN supplementary service in the Malaysian network shall be 
based on the stage 1 and stage 3 descriptions.  
 
B3.2.4  Digital Subscriber Signaling System No. One (DSS1) Protocol   
 
The DSS1 protocol (stage 3 description) for the MSN supplementary service is contained in the 
standard ETS 300 052 -1 [3].  
 
The following gives the recommended guidelines for the implementation of the MSN supplementary 
service in the Malaysian network.  
 
 
Sub clause 6.2  If the access has the MSN supplementary service, the network may use the 
information in the calling party number information element to identify the calling 
terminal, and, if necessary, the appropriate basic or supplementary service.  
Sub clause 9.2.1  The type of number indicated in the Called party number information element sent 
to the user shall be coded as "subscriber number" and the full appropriate number 
shall be sent.  
 
The "numbering plan identification" field of the Called party n umber information 
element shall be coded "ISDN/telephony numbering plan" (ITU -T Recommendation 
E.164).  
Sub clause 9.3.1  All the coding options provided in this sub clause shall be implemented in the 
network.  
 
 
It is recommended that the type of number i ndicated in the Calling party number information element 
sent to the network shall be coded as "subscriber number" and the full appropriate number shall be sent.  
 
 
B3.3 Terminal Portability (TP)  
 
B3.3.1     Definition  
 
The Terminal Portability (TP) supplementary service allows a u ser to move a terminal from one socket 
to another within one given basic access during the active state of a call. It also allows a user to move 
a call from one terminal to another terminal within one given basic access duri ng the active phase of 
the call.  
  MCMC  MTSFB TC T 008:2014 
39 B3.3.2  Service Description  
 
The service description (stage 1 description) for the TP supplementary service is contained in the 
standard ETS 300 053 [4].  
 
The following gives the recommended guidelines for the implementation of the TP supplementary 
service in the Malaysian network.  
 
 
Sub clause 8.1.2  At call suspension request, the cumulative information (i.e. total charge incurred 
up to the moment when the  call is suspended) shall be given.  
 
On resumption of the call, the sending of charging information shall start again 
and the updated cumulative charging information shall be given.  
 
If the call is cleared while the call is suspended at the calling user' s access, and if 
the calling user attempts to resume the call within the timer, then, advice of charge 
information shall be given to the user at the time of the resume attempt.  
Sub clause 8.1.3  If the call is cleared while the call is suspended at the calling user's access, and if 
the calling user attempts to resume the call within the timer, then advice of charge 
information can be given to the user at the time of the resume attempt  
 
 
B3.3.3  Functional Capabilities and Information Flows  
 
The functional cap abilities and information flows (stage  2 description) for the TP supplementary 
service are  contained in the standard ETS 300 054 [5]. The stage  2 description can be taken as 
informative. The implementation of the TP supplementary service in t he Malaysian network shall be 
based on the stage 1 and stage 3 descriptions.  
 
B3.3.4  Digital Subscriber Signaling System No. One (DSS1) Protocol  
 
The DSS1 protocol (stage 3 description) for the TP supplementary service is contained in the 
standard ETS 30 0 055 -1 [6]. The TP supplementary service is implemented in the Malaysian network 
without national definitions or exceptions.  
 
B3.4 Call Waiting (CW)  
 
B3.4.1  Definition  
 
The Call Waiting (CW) supplementary service allows a user to be informed of an incoming call (as per 
basic call procedures) with an indication that no interface information channel is available. The user 
then has the choice of accepting, rejecting or ignor ing the waiting call (as per basic call procedures).  
 
  MCMC  MTSFB TC T 008:2014 
40 B3.4.2  Service Description  
 
The service description (stage 1 description) for the CW supplementary service is contained in the 
standard ETS 300 056 [7].  
 
The following gives the recommended guidelines for the implementation of the CW supplementary 
service in the Malaysian network.  
 
 
Clause 3 and sub clause 6.1  
 No specific time -out T2 will be used for no  answer situation. Basic call 
timer shall apply in this case.  
Clause 5  On the primary rate access, only notifications for the CW 
supplementary service are supported.  
 
The maximum number of calls that the network must be able to handle 
(e.g. active, held,  alerting, waiting) on the basic access is six (6).  
Sub clause 6.1  The network will support the subscription option presented in Table 1.  
 
The network will support value two (2) for the network provider option 
in Table 2. This is specified for all ISDN n umbers on the basic access  
Sub clause 7.1  In interworking cases with non -ISDNs, no special in -band indication 
will be provided to the calling user.  
 
 
B3.4.3  Functional Capabilities and Information Flows  
 
The functional capa bilities and information flows  (stage  2 description) for the CW supplementary 
service ar e contained in the standard ETS 300 057  [8]. The stage 2 description can be taken as 
informative. The implementation of the CW supplementary service in the Malaysian network shall be 
based on the st age 1 and stage 3 descriptions.  
 
B3.4.4  Digital Subscriber Signaling System No. One (DSS1) Protocol  
 
The DSS1 protocol (stage 3 description) for the CW supplementary service is contained in the standard 
ETS 300 058 -1 [9].  
 
The following gives the recommended guidelines for the implementation of the CW supplementary 
service in the Malaysian network.  
 
 
Sub clauses 9.5.1.1, 9.5.2, 9.6.1 and 9.6.2, and 
clauses 13 and 14  In the network side the basic call timer T301 is 
used  
  MCMC  MTSFB TC T 008:2014 
41 B3.5 Sub addressing (SUB)  
 
B3.5.1  Definition  
 
The Sub addressing (SUB) supplementary service allows the called (served) user to expand his 
addressing capacity beyond the one given by the ISDN number.  
 
B3.5.2  Service Description  
 
The service description (sta ge 1 description) for the SUB supplementary service is contained in the 
standard ETS 300 059 [10].  
 
The following gives the recommended guidelines for the implementation of the SUB supplementary 
service in the Malaysian network.  
 
Sub clause 5.1  The 20 octets maximum size of   is applied  
 
 
B3.5.3  Functional Capabilities and Information Flows  
 
The functional capabilities and information flows (stage 2 description) for the SUB supplementary 
service are contained in the standard ETS 300 060 [11]. The stage 2 description can be taken 
as informative. The implementation of the SUB supplementary service in the Malaysian network shall 
be based on the stage 1 and stage 3 descriptions.  
 
B3.5.4  Digit al Subscriber Signaling System No. One (DSS1) Protocol  
 
The DSS1 protocol (stage 3 description) for the SUB supplementary service is contained in the 
standard ETS 300 061 -1 [12].  
 
The following gives the recommended guidelines for the implementation of th e SUB supplementary 
service in the Malaysian network.  
 
 
Clause 5, note 2  The 20 octets maximum size of the sub address is applied.  
 
 
B3.6 Direct Dialing In (DDI)  
 
B3.6.1  Definition  
 
The DDI supplementary service enables a user to call directly via a public ISDN a user on a private 
ISDN by using the public ISDN numbering plan.  
  MCMC  MTSFB TC T 008:2014 
42 B3.6.2  Service Description  
  
The service description (stage 1 description) for the DDI supplementary service is contained in the 
standard ETS 300 062 [13].  
 
The following gives the recommended guidelines for the implementation of the DDI supplementary 
service in Malaysian network.  
 
 
Clause 5  The number of digits is defined on a per subscriber basis  
Sub clauses 8.5.1 and 8.5.3  A special arrangement for not screening the user provided number may be 
applied. For network wide operation ISUP version 2 is required  
Sub clause 8.12  If the D DI supplementary service is provided to the served user of the 
MCID supplementary service, then the MCID supplementary service shall 
be provided globally for the whole access. The network option on provision 
for specific ISDN numbers forming part of the DD I supplementary service 
is not supported.  
Sub clause 8.13  The subscription to the DDI supplementary service and the Multiple 
Subscriber Number (MSN) supplementary service is mutually exclusive  
 
 
B3.6.3  Functional Capabilities and Information Flows  
 
The functional capabilities and information flows (stage 2 description) for the DDI supplementary 
service are contained in the standard ETS 300 063 [14]. The stage 2 description can be taken 
as informative. The implementation of the DDI supplementary servi ce in Malaysian network shall 
be based on the stage 1 and stage 3 descriptions.  
 
B3.6.4  Digital Subscriber Signaling System No. One (DSS1) Protocol  
 
The DSS1 protocol (stage 3 description) for the DDI supplementary service is contained in the 
standard ETS 300 064 -1 [15].  
 
The following gives the recommended guidelines for the implementation of the DDI supplementary 
service in Malaysian network.  
 
Sub clause 6.1, note  The subscription to the DDI supplementary service and the Multiple Subscriber 
Number (M SN) supplementary service is mutually exclusive.  
 
 
B3.7 Calling Line Identification Presentation (CLIP) and Calling Line Identification 
Restriction (CLIR)  
 
B3.7.1  Definition  
 
The  CLIP  supplementary  service  provides  the  called  party  with  the  possibility  of  receiving 
identification of the calling party.  
 
The CLIR supplementary service enables the calling party to prevent presentation of its ISDN number 
to the called party.  
  MCMC  MTSFB TC T 008:2014 
43 B3.7.2  Service Description  
 
CLIP:  
 
The service description (stage 1 description) for the CLIP supplementary service is contained in 
the standard ETS 300 089 [16].  
 
The following gives the recommended guidelines for the implementati on of the CLIP supplementary 
service in Malaysian network.  
 
 
Sub clauses 6.1, 6.2.3.1, 7.2, 8.9 
and 8.13  In case of two calling party number delivery option a special 
arrangement for not screening the user provided number may be 
applied. For network wide operation ISUP version 2 is required.  
Sub clause 7.1  The CLIP supplementary service is always applicable when 
interworking to non -ISDN has occurred.  
 
The calling line identity can be provided to called user in the ISDN if 
the identity has been received an d it is known that presentation is 
not restricted.  
 
On calls to or via non -ISDN, the originating network may restrict 
calling line identity from being forwarded to the destination network 
when the CLIR supplementary service is applicable (see also ETS 
300 090, sub clause 7.1).  
Sub clause 8.5.2  Technical capabilities to provide override category service have to 
be available in Malaysian network  
Annex A  The two calling party number delivery option is applicable. For 
network wide operation ISUP version 2 is  required.  
 
CLIR:  
 
The service description (stage 1 description) for the CLIR supplementary service is contained in the 
standard ETS 300 090 [17].  
 
The following gives the recommended guidelines for the implementation of the CLIR supplementary 
service in the Malaysian network.  
 
Clause 3, and sub clauses 6.2.3.2 
(note 1) and 8.5.1  Technical  capabilities  to  provide  override  category  service  have  
to  be  available  in  the Malaysian network  
Sub clause 6.1  Both subscription  options,  permanent  mode  and  temporary mode 
(defaults:  presentation restricted and presentation not restricted), 
are offered  
Sub clause 7.1  On calls to or via non -ISDNs, it cannot be assured that a restriction 
indication can be carried t o the destination network. The originating 
network in Malaysia may restrict any information identifying the 
calling user from being forwarded to the destination network when 
the CLIR supplementary service is applicable  
  MCMC  MTSFB TC T 008:2014 
44 B3.7.3  Functional Capabilities and  Information Flows  
 
The functional capabilities and information flows  (stage 2 description) for the CLIP  and CLIR 
supplementary services are contained in the standard ETS 300 091 [18]. The stage 2 description can 
be taken as informative.  The implementation of the CLIP and CLIR supplementary services in 
the Malaysian network shall be based on the stage 1 and stage 3 descriptions.  
 
B3.7.4  Digital Subscriber Signaling System No. One (DSS1) Protocol  
 
CLIP:  
 
The DSS1 p rotocol (stage 3 description) for the CLIP supplementary service is contained in the 
standard ETS 300 092 -1 [19].  
 
The following gives the recommended guidelines for the implementation of the CLIP supplementary 
service in the Malaysian network.  
 
Sub clauses 6.2 and 9.4  In case of two calling party number delivery option a special arrangement 
for not screening the user provided number may be applied. For 
networkwide operation ISUP version 2 is required.  
Sub clause 9.2.1  It is recommended for the coding of the calling party information element 
sent by the calling user:  
 
-The "numbering plan identification" field shall be coded "ISDN/Telephony 
numbering plan".  
 
In case DDI is not activated for the same access:  
 
- The "ty pe of number" field shall be coded "subscriber number" and the full 
ISDN subscriber number shall be sent.  
 
In case DDI is activated for the same access:  
 
- The "type of number" field shall be coded "unknown" and only the 
extension number of the calling p arty shall be sent. The network then 
completes the calling party number by adding the national number of the 
access to the calling party number information element.  
Sub clause 9.3.1  Networks in Malaysia may accept a full ISDN number in a Calling party 
number information element with the addition of a prefix or escape digits to 
the number digits field and the type of number field set to "National Number  
Sub clause 9.5.1 and 
Table 1, note 7  The coding of the calling party information element sent by the de stination 
local exchange:  
 
- The "numbering plan identification" field shall be coded "ISDN/Telephony 
numbering plan";  
 
-  The "type  of  number" field  shall  be  coded  "unknown", and the number 
is organized according to the network dialing plan.  
  MCMC  MTSFB TC T 008:2014 
45  
Clause 11  The following option is according to the network rules and operations in Malaysia:  
 
- The network shall send the Calling party number information element according to 
sub clause  
9.5.1, fifth paragraph and shall include no Calling party sub addr ess information 
element.  
 
Annex B  The two Calling party number information elements delivery option is applicable.  For 
network wide operation ISUP version 2 is required  
 
 
CLIR:  
 
The DSS1 protocol (stage 3 description) for the CLIR supplementary service is contained in the 
standard ETS 300 093 -1 [20]. The following gives the recommended guidelines for the implementation 
of the CLIR supplementary service in the Malaysian network.  
 
 
Clause 11  On calls to or via non -ISDNs, the originating network may restrict calling line identity 
from being  forwarded  to  the  destination  network  when  the  CLIR  supplementary  
service  is applicable.  
 
 
B3.8 Connected Line Identification Presentation  (COLP) and Connected Line 
Identification  Restriction (COLR)  
 
B3.8.1  Definition  
 
The COLP supplementary service provides the calling party with the possibility to receive identification 
of the connected party.  
 
The COLR supplementary service enables the connected party to prevent presentation of its 
ISDN number to the calling party.  
 
B3.8.2  Service Description  
 
COLP:  
 
The service description (stage 1 description) for the COLP supplementary service is contained in 
the standard ETS 300 094 [21].  
 
The following gives the recommended guidelines for the implementation of the COLP supplementary 
service in the Malaysian networ k.  
 
Sub clauses 6.1, 6.2.3.1, 7.2, 8.9  
and 8.13  A special arrangement for not screening the user provided number 
may be applied. For networkwide operation ISUP version 2 is 
required.  
Sub clause 7.1  The use of the COLP supplementary service can be guaranteed 
only when the call is end -to end ISDN.  
Sub clauses 8.5.4 and 8.10  Technical  capabilities  to  provide  override  category  service  
have  to  be  available  in  the Malaysian network  MCMC  MTSFB TC T 008:2014 
46 COLR:  
 
The service description (stage 1 description) for the COLR supplementary service is contained in the 
standard ETS 300 095 [22].  
 
The following gives the recommended guidelines for the implementation of the COLR supplementary 
service in the Malaysian networ k.  
 
Clause 3, and sub clauses  
6.2.3.2,8.5.3 and 8.10  Technical  capabilities  to  provide  override  category  service  have  to  
be  available  in  the Malaysian network  
Sub clause 6.1  Both subscription  options, permanent mode and temporary mode 
(defaults:  presentation restricted and presentation not restricted), are 
offered.  
Sub clause 7.1  Destination network in Malaysia may restrict any information identifying 
the connected party from being returned to the originating network when 
the COLR supplementary service has been invoked  
 
B3.8.3  Functional Capabilities and Information Flows  
 
The functional capa bilities and information flows (stage  2 description) for the COLP and COLR 
supplementary services are contained in the standard ETS 300 096 [23]. The stage 2 description can 
be taken as informative. The implementation of the COLP and COLR supplementary services in 
the Malaysian network shall be based on the stage 1 and stage 3 de scriptions.  
 
B3.8. Digital Subscriber Signaling System No. One (DSS1) Protocol  
 
COLP:  
 
The DSS1 protocol (stage 3 description) for the COLP supplementary service is contained in the 
standard ETS 300 097 -1 [24].  
 
The following gives the recommended guidelines for the implementation of the COLP supplementary 
service in the Malaysian network.  
 
Sub clauses 6.3 and 9.4  A special arrangement for not screening the user provided number may be 
applied. For network wide op eration ISUP version 2 is required  
Sub clause 9.2.1  It  is  recommended for the coding of the connected party information 
element sent by the connected user:  
 
- The "numbering plan identification" field shall be coded "ISDN/Telephony 
numbering plan";  
 
- The "type of number" field shall be coded "subscriber number" and the full 
ISDN subscriber number shall be sent.  
Sub clause 9.3.1  Networks in Malaysia  may accept  a  full  ISDN  number  in  a  Connected  
party  number information element with the additi on of a prefix or escape 
digits to the number digits field and the type of number field set to "National 
Number  
  MCMC  MTSFB TC T 008:2014 
47 Sub clause 9.5.1 and  Table 1, 
note 7  The coding of the connected party information element sent by the 
originating local exchange: - The "numbering plan identification" field 
shall be coded "ISDN/Telephony numbering plan";  
-  The "type of number" field shall be coded "unknown", and the numbe r 
is organized according to the network dialing plan  
 
 
COLR:  
 
The DSS1 protocol (stage 3 description) for the COLR supplementary service is contained in the 
standard ETS 300 098 -1 [25].  
 
The following gives the recommended guidelines for the implementation of the COLR supplementary 
service in the Malaysian network.  
 
 
Clause 11  Destination network in Malaysia may restrict any information identifying the connected 
party from being returned to the originating network when the COLR supplementary 
service has been invoked  
 
 
B3.9 Malicious Call Identification (MCID)  
 
B3.9.1  Definition  
 
The MCID supplementary service enables a user to request that the source of an incoming call 
is identified and registered by the network.  
 
B3.9.2  Service Description  
 
The service description (stage 1 description) for the MCID supplementary service is contained in the 
standard ETS 300 128 [26].  
 
The following gives the recommended guidelines for the implementation of the MCID supplementary 
service in the Malaysian network.  
 
 
Clause 5  The network will support the registration of calling party sub address.  
Sub clauses 5, 6.1 and 6.2.3  The network will not support the automatic invocation of the service on 
unanswered calls.  
Sub clause 6.2.3  The network will not support the continuation of the call to be presented 
after the calling user has cleared.  
Sub clause 7.1  When interworking between the PSTN and the ISDN occurs and if the 
number of the cal ling user is not available, the network will support the 
option of registering information about the routing of the call.  
 
The option in the note is not supported.  
  MCMC  MTSFB TC T 008:2014 
48 Sub clause 8.9  The network will not provide the service for specific ISDN numbers 
formin g part of the DDI supplementary service  
Sub clauses 8.10.1, 8.10.2 
and 8.10.3  The network will support the registration of the last diverting user  
Sub clause 8.11  The network will not support the registration of the called free phone 
number  
 
 
B3.9.3  Functional Capabilities and Information Flows  
 
The functional capabilities and information flows (stage 2 description) for the MCID supplementary 
service are contained in the standard ETS 300 129 [27]. The stage 2 description can be taken 
as informative. The implementation of the MCID supplementary service in the Malaysian network shall 
be based on the stage 1 and stage 3 descriptions.  
 
B3.9.4  Digital Subscriber Signaling System No. One (DSS1) Protocol  
 
The DSS1 protocol (stage 3 description) for the MCID  supplementary service is contained in the 
standard ETS 300 130 -1 [28].  
 
The following gives the recommended guidelines for the implementation of the MCID supplementary 
service in the Malaysian network.  
 
 
Clause 3  The call information shall include the calling party sub address, if provided by the calling 
user 
 
 
B3.10 Closed User Group (CUG)  
 
B3.10.1  Definition  
 
The CUG supplementary service enables users to form groups to and from which access is restricted. 
A specific user may be a member of one or more closed user groups. Members of a specific closed 
user group can communicate among themselves but not, in general, with users outside the group.  
 
B3.10.2  Service Description  
 
The service description (stage 1 description) for the CUG supplementary service is contained in 
the standard ETS 300 136 [29].  
 
The following gives the recommended guidelines for the implementation of the CUG supplementary 
service in the Malaysian network.   
 
 
Sub clause 6.1  The maximum number of closed user groups which can be allocated to an 
individual user is 75. All the subscription options defined in this Sub clause are 
supported  
 
  MCMC  MTSFB TC T 008:2014 
49 B3.10.3  Functional Capabilities and Information Flows  
 
The functional capabilities and information flows (stage 2 description) for the CUG supplementary 
service are contained in the standard ETS 300 137 [30]. The stage 2 description can be taken 
as informative. The implementation of the CUG supplementary servi ce in the Malaysian network shall 
be based on the stage 1 and stage 3 descriptions.  
 
B3.10.4  Digital Subscriber Signaling System No. One (DSS1) Protocol  
 
The DSS1 protocol (stage 3 description) for the CUG supplementary service is contained in the 
standard ETS 300 138 -1 [31].  
 
The following gives the recommended guidelines for the implementation of the CUG supplementary 
service in the Malaysian network.  
 
 
Sub clause 6.1  All the subscription options defined in this Sub clause are supported.  
Sub cla use 9.2.4.1 b)  The return error component shall be retained along with the ETS 300 403 -1 
cause.  
 
 
B3.11 Call Hold (HOLD)  
 
B3.11.1  Definition  
 
The HOLD supplementary service allows a user to interrupt communications on an existing call and 
then subsequently, if desired, re -establish communications.  
 
B3.11.2  Service Description  
 
The service description (stage 1 description) for the HOLD supplementary service is contained in the 
standard ETS 300 139 [32].  
 
The following gives the recommended  guidelines for the implementation of the HOLD supplementary 
service in the Malaysian network.  
 
 
Clause 5  On the primary rate access, only notifications for the HOLD supplementary 
service are supported.  
Sub clause 6.2.3.1  The network may support the option: A call can be placed on hold after the call 
has been offered to the called user.  
 
The sending of notifications to the remote user is supported.  
Sub clause 6.2.3.2  The sending of notifications to the remote user is supp orted  
Sub clause 7.1, note  If a remote user is a PSTN user, the notifications about the hold request or 
retrieve request of the call to that user are not supported. The last sentence of 
the note is not applicable  
 
  MCMC  MTSFB TC T 008:2014 
50 B3.11.3   Functional Capabilities and I nformation Flows  
 
The functional capabilities and information flows (stage 2 description) for the HOLD supplementary 
service are contained in the standard ETS 300 140 [33]. The stage 2 description can be taken 
as informative. The implementation of the HOLD supplementary service in the Malaysian network shall 
be based on the stage 1 and stage 3 descriptions.  
 
B3.11.4   Digital Subscriber Signaling System No. One (DSS1) Protocol  
 
The DSS1 protocol (stage 3 descripti on) for the HOLD supplementary service is contained in the 
standard ETS 300 141 -1 [34].  
 
The following gives the recommended guidelines for the implementation of the HOLD supplementary 
service in the Malaysian network.  
 
 
Clause 9, and Sub clauses 
9.1.1, 9.2.1 and 9.4.1  The user A at the originating side can hold a call in the Call 
Delivered state (U4).  
 
 
B3.12   Advice of Charge (AOC)  
 
B3.12.1  Definition  
 
Advice of Charge (AOC) is a group of supplementary services allowing the served user to be informed 
of usage -based charging information.  
 
The AOC group of supplementary services includes the following:  
 
AOC -S Advice of Charge, charging information at call set -up time; AOC -D Advice of Charge, charging 
information during the call; AOC -E Advice of Charge,  charging information at the end of a call.  
 
B3.12.2  Service Description  
 
AOC -S:  
 
The service description (stage 1 description) for the AOC -S supplementary service is contained in the 
standard ETS 300 178 [35].  
 
The following gives the recommended guide lines for the implementation of the AOC -S supplementary 
service in the Malaysian network.  
 
 
Clause 5  The AOC -S supplementary service is applicable only in relation to time tariff setting 
at call establishment and time tariff changes  
Sub clause 8.16  No charging information for the use of the Three -Party supplementary service can 
be sent to the served user  
 
  MCMC  MTSFB TC T 008:2014 
51 AOC -D:  
 
The service description (stage 1 description) for the AOC -D supplementary service is contained in the 
standard ETS 300 179 [36].  
 
The foll owing gives the recommended guidelines for the implementation of the AOC -D supplementary 
service in the Malaysian network.  
 
Sub clause 6.2.3  The value of the timer t shall be 10 seconds  
Sub clause 8.15  The cumulative charging information is given in all the described cases: at 
the suspension request, on the resumption of the call, and if the call is 
terminated while the call is suspended at the calling user's access and the 
calling user attempts to resume the call within the timer.  
Sub clause 8.16  No cha rging information for the use of the Three -Party supplementary 
service can be sent to the served user.  
Annex A, Sub clause A.2.1  The Malaysian network may not include some charges, e.g. charges 
incurred by the use of some supplementary services, in the su btotal 
charges and/or the total charges  
Annex A, Sub clause A.3  Charging information (AOC) can be given in currency units or metering 
pulses according to access arrangements.  
 
 
AOC -E:  
 
The service description (stage 1 description) for the AOC -E supplementary service is contained in the 
standard ETS 300 180 [37].  
 
The following gives the recommended guidelines for the implementation of the AOC -E supplementary 
service in the Malaysian netw ork.  
 
 
Sub clause 8.4  After a call has been transferred and the transferring user is charged for 
that transferred part of the call, and the AOC -E supplementary service has 
been invoked for that call, then the charging information shall be sent to 
the transferring user when the call is terminated.  
Sub clauses 8.10.1, 8.10.2 
and 8.10.3  Forwarding user:  
When a call is forwarded and the forwarding user is charged for the 
forwarded part of the call, then the charging information shall be sent to the 
forwa rding user when the call is terminated provided that the served user 
has subscribed to the AOC -E supplementary service with the value of the 
subscription option set to "for all calls automatically  
Sub clause 8.15  If the call is terminated while the call i s suspended at the calling user's 
access, and if the calling user attempts to resume the call within the timer, 
then advice of charge information shall be given to that user at the time of 
the resume attempt  
Sub clause 8.16  No charging information for the  use of the Three -Party supplementary 
service can be sent to the served user  
  MCMC  MTSFB TC T 008:2014 
52 Annex A, Sub clause 
A.2.1  The Malaysian network may not include some charges, e.g. charges 
incurred by the use of some supplementary services, in the subtotal 
charges and/or th e total charges  
Annex A, Sub clause A.3  Charging information (AOC) can be given in currency units or metering 
pulses according to access arrangements  
 
 
B3.12.3  Functional Capabilities and Information Flows  
 
The functional capabilities and information flows (stage 2 description) for the AOC supplementary 
service are contained in the standard ETS 300 181 [38]. The stage 2 description can be taken 
as informative. The implementation of the AOC supplementary servi ce in the Malaysian network shall 
be based on the stage 1 and stage 3 descriptions.  
 
B3.12.4  Digital Subscriber Signaling System No. One (DSS1) Protocol  
 
The DSS1 protocol (stage 3 description) for the AOC supplementary service is contained in the 
standa rd ETS 300 182 -1 [39]. The AOC supplementary service is implemented in the Malaysian 
network without national definitions or exceptions.  
 
B3.13 Three Party (3PTY)  
 
B3.13.1  Definition  
 
The 3PTY supplementary service enables a user to establish, participate in and control, a three -
way conversation, i.e. a simultaneous communication involving the served user and two remote parties.  
 
B3.13.2        Service Description  
 
The service description (stage 1 description) for the 3PTY supplementary service is contained in the 
standard ETS 300 186 [40].  
 
The following gives the recommended guidelines for the implementation of the 3PTY supplementary 
service in the Malaysian networ k.  
 
 
Sub clause 6.2.3.1  Establishing a three -way conversation that would include calls which are not 
intended for speech communication is not prevented  
Sub clauses 8.1.1, 8.1.2 
and 8.1.3  No charging information for the use of the Three -Party supplementary 
service can be sent to the served user.  
Sub clause 8.16  A remote party in a three -way conversation can invoke the 3PTY 
supplementary service in order to make their connection to the three -way 
conversation a part of another three -way conversa tion controlled by that 
remote party  
 
A remote party in a three -way conversation can invoke the 3PTY 
supplementary service in order to make their connection to the three -way 
conversation a part of another three -way conversation controlled by that 
remote pa rty 
 
  MCMC  MTSFB TC T 008:2014 
53 B3.13.3  Functional Capabilities and Information Flows  
 
The functional capabilities and information flows (stage 2 description) for the 3PTY supplementary 
service are contained in the standard ETS 300 187 [41]. The stage 2 description can be taken 
as informative. The implementation of the 3PTY supplementary service in the Malaysian network shall 
be based on the stage 1 and stage 3 descriptions.  
 
B3.13.4  Digital Subscriber Signaling System No. One (DSS1) Protocol  
 
The DSS1 protocol  (stage 3 description) for the 3PTY supplementary service is contained in the 
standard ETS 300 188 -1 [42].   The 3PTY supplementary service is implemented in the Malaysian 
network without national definitions or exceptions.  
 
B3.14 Call Forwarding (CFB, CFU, CFNR)  
 
B3.14.1  Definition  
 
The Call Forwarding supplementary services comprise the following services:  
-Call Forwarding Busy (CFB);  
-Call Forwarding Unconditional (CFU);  
-Call Forwarding No Reply (CFNR).  
 
The CFB supplementary service enables a served user to have the network redirect to another user 
calls which are addressed to the served user´s ISDN number and meet busy.  
 
The CFU supplementary service enables a served user to have the network redirect to another user 
calls which are addressed to the served user´s ISDN number.  
 
The CFNR supplementary service enables a served user to have the network redirect to another 
user call which are addressed to the served user´s ISDN number, and for which the connection 
is not established within a defined period of time.  
 
B3.14.2  Service Description  
 
CFB:  
 
The service description (stage 1 description) for the CFB supplementary service is contained in 
the standard ETS 300 199 [45].  
 
The following gives the recommended guidelines for the implementation of the CFB supplementary 
service in the Malaysian network.   
 
 
Clause 5 and Sub clause 6.2.3  The maximum number for call diversions is 5 for each call.  
 
Sub clause 7.1  Once a call has been forwarded to a non -ISDN network the 
indication call forwarded is used.  
 
Once a call arrives at an ISDN network from a non-ISDN network 
with the indication forwarded call the call forwarding counter will be 
set to one, if no other value for the call forwarding counter is 
supplied.  MCMC  MTSFB TC T 008:2014 
54 Sub clause 8.17  Forwarding any UUI or request for UUS may be restricted to forwarding users who 
subscribe to the relevant parts of the UUS supplementary service.  
 
 
CFU:  
 
The service description (stage 1 description) for the CFU supplementary service is contained in the 
standard ETS 300 200 [46].  
 
The following gives the recommended guidelines for the implementation of the CFU supplementary 
service in the Malaysian network.  
 
Clause 5 and Sub clause 6.2.3  The maximum number for call diversions is 5 for each call. Sub 
clause 7.1  
 
Once a call has been forwarded to a non -ISDN network the indication 
call forwarded is used.  
 
Once a call arrives at an ISDN network from a non -ISDN network 
with the indication forwarded call the call forwarding counter will be 
set to one, if no other valu e for the call forwarding counter is supplied.  
Sub clause 8.17  Forwarding any UUI or request for UUS may be restricted to 
forwarding users who subscribe to the relevant parts of the UUS 
supplementary service.  
 
 
CFNR:  
 
The service description (stage 1 d escription) for the CFNR supplementary service is contained in 
the standard ETS 300 201 [47].  
 
The following gives the recommended guidelines for the implementation of the CFNR supplementary 
service in the Malaysian network.  
 
 
Clause 5 and Sub clause 6.2.3  The maximum number for call diversions is 5 for each call.  
Sub clause 6.1  The value of 30 seconds will be used for the no reply timer  
Sub clauses 6.2.3.1 and 6.3.3  The method b) is used.  The call  to  the  served  user  will  be  
cleared  when  th e  CFNR supplementary service is invoked. If the 
forwarded call cannot be completed the call shall be terminated  
Sub clause 7.1  Once a call has been forwarded to a non -ISDN network the indication 
call forwarded is used.  
 
Once a call arrives at an ISDN ne twork from a non -ISDN network with 
the indication forwarded call the call forwarding counter will be set to 
one, if no other value for the call forwarding counter is supplied.  
 
  MCMC  MTSFB TC T 008:2014 
55 Sub clause 8.17  Forwarding any UUI or request for UUS may be restricted to forwarding users who 
subscribe to the relevant parts of the UUS supplementary service.  
 
If the calling user requests service 1 and indicates that it is not required on the 
call, then if the called  user has explicitly accepted the request, the request for the 
call forwarding no reply supplementary service will be rejected and the call shall 
not be forwarded.  
Annex A  The following service provider option in the note is supported: the request for the  
call forwarding no reply supplementary service will be rejected and the call will not 
be forwarded  
 
 
B3.14.3  Functional Capabilities and Information Flows  
 
CFB:  
 
The functional capabilities and information flows (stage 2 description) for the CFB supplementary 
services are contained in the standard ETS 300 203 [48]. The stage 2 description can be taken 
as informative. The implementation of the CFB supplementary serv ice in the Malaysian network shall 
be based on the stage 1 and stage 3 descriptions.  
 
CFU:  
 
The functional capabilities and information flows (stage 2 description) for the CFU supplementary 
services are contained in the standard ETS 300 204 [49]. The stage 2 description can be taken 
as informative. The implementation of the CFU supplementary service in the Malaysian network shall 
be based on the stage 1 and stage 3 descriptions.  
 
CFNR:  
 
The functional capabilities and information flows (stage 2 description) for the CFNR supplementary 
services are contained in the standard ETS 300 205 [50]. The stage 2 description can be taken 
as informative. The implementation of the CFNR supplementary servi ce in the Malaysian network shall 
be based on the stage 1 and stage 3 descriptions.  
 
B3.14.4  Digital Subscriber Signaling System No. One (DSS1) Protocol  
 
The DSS1 protocol (stage 3 description) for the Call Forwarding supplementary services is contained in 
the standard ETS 300 207-1 [51]. 
 
The following gives the recommended guidelines for the implementation of the Call Forwarding 
supplementary services in the Malaysian network.  
  MCMC  MTSFB TC T 008:2014 
56 Clause 5  The diversion supplementary services are provided on a per ISDN number basis.  
 
The call forwarding services can be subscribed collectively for all the basic 
services to which the user(s) subscribes  
Sub clause 6.1  The subscription options listed in the table 1 are provided.  
 
In the table 2 the following network provider option values are applicable:  
 
-served user call is cleared on invocation of diversion;  
-maximum number of diversions for a single call is 5;  
-call forwarding on no reply timer value is 20 s;  
-partial rerouting is provided at the T reference point  
Sub clause 9.1.1.1  The forwarding exchange shall verify the forwarded -to number only for a limited 
set of numbers; the minimum requirement is that emerge ncy numbers are not 
accepted as forwarded to numbers  
Sub clauses 9.2.3.1 
and 9.2.5.1  The type of the number shall be set to "unknown" and the number is organized 
according to the network dialing plan.  
Sub clause 9.2.4.4.1 
and clause 13  The value of T -CFNR is 20 s  
Sub clause 9.2.4.4.1  The network provider option "served user call retention on invocation of diversion" 
is "clear call on invocation"  
Sub clauses 10.4.1 
and 10.5.1  If a diverted call is presented from a private network to the public network, then 
the public network is required to check the redirecting number from the SETUP 
message. The number shall be checked against the numbering space of the 
private network. In cas e of a mismatch the redirecting  number  shall  be  replaced  
by the  default  number  associated  with  the  private network.  
 
It is recommended for the coding of the redirecting number information sent by the 
private network:  
- The "numbering plan iden tification" field shall be coded "ISDN/Telephony 
numbering plan". In case DDI is not activated for the same access:  
- The "type of number" field shall be coded "subscriber number" and the full ISDN 
subscriber number shall be sent.  
 
In case DDI is activat ed for the same access:  
- The "type of number" field shall be coded "unknown" and only the extension 
number of the redirecting number shall be sent. The network then completes the 
redirecting number by adding the national number of the access to the redir ecting 
number information.  
Sub clause 10.5.1  The public network shall clear the call towards the private network on acceptance 
of the call rerouting request  
 
  MCMC  MTSFB TC T 008:2014 
57 B3.15 User -to-User Signaling (UUS)  
 
B3.15.1  Definition  
 
The UUS supplementary service enables a user to send/receive a limited amount of information to/from 
another user over the signaling channel in association with a call to the other user. This information 
shall be passed transparently (i.e. without modifica tion of contents) through the network. The network 
shall not interpret or act upon this information.  
 
The user can transfer UUI in different phases of the call depending on the service(s) to which the user 
subscribes. These services are:  
 
a) Service 1 - User -to-user information exchanged during the set -up and clearing phases of a 
call/connection, by transporting the User -to-user information element  within call/connection control 
messages  
b) Service 2 - User -to  user  information  exchanged  from  the  sender’s  point  of  view  during  
call/connection establis hment, between the ALERTING and CONNECT messages,  within USER 
INFORMATION messages; and  
c) Service 3 -   User -to-user information exchanged while a call/connection is in the Active state,  within 
USER INFORMATION messages.  
 
B3.15.2  Service Description  
 
The service description (stage 1 description) for the UUS supplementary service is contained in the 
standard ETS 300 284 [52].  
 
The following gives the recommended guidelines for the implementation of the UUS supplementary 
service in the Malaysian network.  
 
 
Clause 5  Service provider option for service 2, UUI sent by the calling user prior to 
receiving the acceptance of the call b y the called user may be delivered to the 
called user after the call has been established, is supported.  
 
Note on limitation of UUI to only 32 octets during an interim period of time is not 
applicable for the Malaysian network.  
Sub clause 6.1  Service provider option about provision of one or any combination of services is 
supported. Service provider option about withdrawal separately per service is 
supported.  
Sub clause 6.2.1.3  Service provider option about activation of service 3 by the called user a fter the 
connection has been established is supported  
Sub clause 6.3.3  In case of excessive UUI length the sending user shall be informed  
Clause 7  Service provider option about explicit acceptance, if the remote user replies with 
UUI to explicit request sent to an ISDN only supporting implicit requests, is 
supported.  
Sub clauses 8.10.1, 
8.10.2 and 8.10.3  Forwarding any UUI or request for UUS may be restricted to forwarding users 
who subscribe to the relevant parts of the UUS supplementary service  
  MCMC  MTSFB TC T 008:2014 
58 Sub clause 8.10.3  If the calling user requests service 1 and indicates that it is not required on the 
call, then if the called user has explicitly accepted the request, the request for the 
call forwarding no reply supplementary service will be rejected and the  call shall 
not be forwarded.  
Annex A  
 The following service provider option in the note is supported: the request for the 
call forwarding no reply supplementary service will be rejected and the call will 
not be forwarded.  
 
 
B3.15.3  Functional Capabilities and Information Flows  
The functional capabilities and information flows (stage 2 description) for the UUS supplementary 
service are contained in the standard ETR 285 [53].  The stage 2 description can be taken  as 
informative. The implementation of the UUS supplementary service in the Malaysian network shall be 
based on the stage 1 and stage 3 descriptions.  
 
B3.15.4  Digital Subscriber Signaling System No. One (DSS1) Protocol  
 
The DSS1 protocol (stage 3 description ) for the UUS supplementary service is contained in 
the standard ETS 300 286 -1 [54].  
 
The following gives the recommended guidelines for the implementation of the UUS supplementary 
service in the Malaysian network.  
 
 
Sub clause 6.1  Any combination of the following possibilities can be provided separately or 
globally:  
-service 1 implicit, or service 1 implicit together with service 1 explicit;  
-service 2;  
-service 3.  
Sub clauses 9.2.2.1 and 
9.2.2.2  The calling network shall accept the first two USER INFORMATION 
messages from the calling user and the calling network shall deliver them to 
the called user after the calling and called network have entered the Active 
(N10) call state.  
Sub clause 9.2.2.2  The calling network shall send a STATUS message with cause #43 to the 
calling user when discarding the USER INFORMATION message.  
 
The called network shall send a STATUS message with cause #43 to the 
called user when discarding the USER INFORMATION message  
Sub clause 9.3.1.2.1  During the  Active (U10) call state, the calling user or the called user can 
activate service 3  
Sub clause 9.3.2.2  The sending network shall send a STATUS message with cause #43 to the 
sending user when discarding the USER INFORMATION message . 
 
  MCMC  MTSFB TC T 008:2014 
59 B3.16 Explicit Call Transfer (ECT)  
 
B3.16.1  Definition  
 
The ECT supplementary service enables a user (user A) to transform two of that user’s calls (an 
active call and a held call), each of which can be an incoming call or an outgoing call, into a new call 
between user B  and user C.  
 
B3.16.2  Service Description  
 
The service description (stage 1 description) for the ECT supplementary service is contained in 
the standard ETS 300 367 [55].  
 
The following gives the recommended guidelines for the implementation of the ECT supplementary 
service in the Malaysian network.  
 
 
 
Clause 5 and Sub clause 6.2.3  The service provider option, that the ECT supplementary service can 
be invoked after user C has been informed of the call (i.e. an 
outgoing call from A to user C, whe re the connection has not yet 
been established), is supported  
Sub clause 8.1.3  When the call is transferred and the transferring user is charged for 
the transferred part of the call, then the charging information shall be 
sent to the transferring user when the transferred call is terminated 
provided that the served user has activated the AOC -E 
supplementary service for that call  
 
 
B3.16.3  Functional Capabilities and Information Flows  
 
The functional capabilities and information flows (stage 2 description) for the ECT supplementary 
service are contained in the standard ETS 300 368 [56]. The stage 2 description can be taken 
as informative. The implementation of the ECT supplementary servi ce in the Malaysian network shall 
be based on the stage 1 and stage 3 descriptions.  
  MCMC  MTSFB TC T 008:2014 
60 B3.16.4  Digital Subscriber Signaling System No. One (DSS1) Protocol  
 
The DSS1 protocol (stage 3 description) for the ECT supplementary service is contained in the 
stand ard ETS 300 369 -1 [57].  
 
The following gives the recommended guidelines for the implementation of the ECT supplementary 
service in the Malaysian network.  
 
 
Clause 5 and Sub clause 9.2.5  The network option to allow the invocation of the ECT service when 
one of the calls is an outgoing call in the Call delivered (alerting) state 
is supported.  
Sub clause 9.2  The explicit linkage procedure is supported  
Sub clause 10.3  The “mechanism to avoid looping of uncontrolled circuits” is supported 
by the public netw ork. If the loop prevention procedure cannot decide 
whether the resulting connection would result in a loop, the call 
transfer is completed.  
The time supervision for the loop prevention procedure is 2 seconds  
 
 
B3.17 Supplementary Service Interactions  
 
The public network shall support protocol interaction between the various supplementary services 
according to ETS 300 195 -1 [43]. Network options of ETS 300 195 -1 are left as implementation 
options, unless stated otherwise in the Sub clauses relating to the individual supplementary 
services. Should any conflict arise between ETS 300 195 -1 and the specifications in Sub clause 3.2 
to 3.16, then the text of the individual supplementary services shall be taken as definitive.  
 
 
TE1 - ISDN -capable terminal equipment e.g.: Digital phone and digital fax  
TE2 - Non-ISDN equipment e.g: Analogue phone and the RS -232 serial port on computer  
TA - Terminal adapter that interface the TE2 devices with ISDN network  
NT1 - Network terminator that reside between telco’s network and customer equipment  
NT2 - An intelligent device that can perform switching function e.g: PABX and Local  Area  
Network (LAN)   
 
61 
 Annex C  
(Informative)  
 
Amendments  
 
Amendments to SKMM FTS ISDN -BA Rev. 1.01:2007  
Page  Clause  Items Amended  
Cover  - The document has adopted new numbering system and cover page. 
It has been renumbered as “MCMC MTSFB TC T008:2014”.  
 
i - Explanatory note on the development of Technical Codes has been 
included.  
 
1 1.2 Reference for Section D has been replaced with EN 300 403 -1 
11/99.  
 
1 2 New clause on normative references has been included.  
 
3 4.1 Power supply requirements have been revised based on the 
Information Booklet 2012 Edition, Approval of Electrical Equipment, 
issued by the Energy Commission.  
 
4 4.1  
(Figure 2)  Alphanumeric key pad layout has been included.  
4 4.2.1  New clause on n etwork interface has been included.  
 
4 4.2.2  Connector specification has been revised to be either RJ11 or RJ45.  
 
- - Old c lause 2.3  on characteristics of telephone has been removed.  
 
5 4.3 New clause on interoperability  requirement has been included.  
 
20 Section D  Network layer requirements have been revised based on EN 300 
403-1 11/99, Integrated Services Digital Network (ISDN): Digital 
Subscriber Signaling System No.  One  (DSS1) protocol: Signaling 
network layer for circuit -mode basic call control; Part 1: Protocol 
Specification [ITU -T Recommendation Q.931 (1993), modified].  
 
32 Annex A  The normative references have been updated.  
 
33 Annex B  Technical guidelines of ISDN supplementary service have been 
included.  
 
 
 
 
 
 
 SKMM MTSFB TC T001:2013  
62 Acknowledgements  
 
 
Members of Fixed Terminal Working Group  
 
Mr Abd. Hamid Mustafa (Chairman)  Telekom Malaysia Berhad  
Mr Ahmad Faizan Pardi (Vice Chairman)  SIRIM QAS International Sdn Bhd  
Mrs Nur Rashidah Abas Azmi (Secretary)  Telekom Malaysia Berhad  
Mr Shahadan Man  AJV Holding Sdn. Bhd.  
Mr Zulkhairi Zainal Abidin  Epson Malaysia  
Mr Tan Keok Kuang  NEC Corporation of Malaysia Sdn. Bhd  
Mr Khairul Akmal Zahri  Packet One Networks Sdn. Bhd.  
Mr Syed Ahmad Anas   Packet One Networks Sdn. Bhd.  
Mr Sam Choong   Panasonic Malaysia  
Mr Pang Chieng Yong  Panasonic Malaysia  
Mr Mohd Ackmal Abd. Samad  Panasonic System Networks  
Mrs Hafizah Zainal Abiddin  SIRIM QAS  International Sdn Bhd  
Mrs Nurhafenah Abdul Jalil  
Mr Zul Jaafar   SIRIM  QAS  International Sdn Bhd  
SIRIM QAS  International Sdn Bhd  
Mr Amin Hapis Khairan  Telekom Malaysia Berhad  
Mr Anuar Wahab  Telekom Malaysia Berhad  
Mrs Badariah Zainal  Telekom Malaysia Berhad  
Mr Md Azmi Karnain  Telekom Malaysia Berhad  
Mr Mohd Syaukiazahar  Telekom Malaysia Berhad  
Mr Muhd Hadzir Abu Hassan  Telekom Malaysia Berhad  
Mrs Nor Maizatul Syima  Telekom Malaysia Berhad  
Mrs Nur Faliza Yaakup  Telekom Malaysia Berhad  
Mr Rahmat Fauzi Zainal  Telekom Malaysia Berhad  
Mrs Raja Nor Suha   Telekom Malaysia Berhad  
Mrs Rosliza Abu Bakar   Telekom Malaysia Berhad  
Mrs Suriyati Rahim   Telekom Malaysia Berhad  
Ms Wan Nur Hanani   Telekom Malaysia Berhad  
Mr Othman Sidek  TIME dot Com Berhad