SKMM MTSFB TC T002 :2013  
 
 
TECHNICAL CODE  
 
 
 
 
 
 
 
 
 
 
 
 
 
SPECIFICATION  FOR   
ANALOGUE  CALLING LINE IDENTITY PRESENTATION (A -CLIP)  
FACILITY FOR CONNECTION TO PUBLIC SWITCHED  
TELEPHONE NETWORK (PSTN)  
 
First Revision  
 
 
 
 
 
 
 
 
Developed by   Registered by  
  
 
 
Issued d ate: 31 January 201 3 
 
 
© Copyright 201 3SKMM MTSFB TC T 002:2013  
 
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 Comm ission’) 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 pro vides for the Commission 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 rea sonable time.  
 
In exercise 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:  
 
Mala ysian Communications and Multimedia Commission (SKMM)  
Off Pesiaran 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 St andards Forum Bhd (MTSFB ) 
L2-E-11, Lab 3, Digital Media Centre  
Enterprise 4  
Technology Park Malaysia  
Lebuhraya Puchong –Sg Besi  
Bukit Jalil  
57000 Kuala Lumpur  
MALAYSIA  
 
Tel: +60 3 8996 5505/5509  
Fax: +60 3 8996 5507  
http://www.mtsfb.org.my  
 SKMM MTSFB TC T002 :2013 
ii 
  
 
CONTENTS  
 
Committee Representation  ................................ ................................ ................................ ....................  iii 
Foreword  ................................ ................................ ................................ ................................ ................  iv 
1. Scope  ................................ ................................ ................................ ................................ ..............  1 
2. Norma tive references  ................................ ................................ ................................ ......................  1 
3. Abbreviations ................................ ................................ ................................ ................................ ... 1 
4. Requirements  ................................ ................................ ................................ ................................ .. 2 
4.1  General requirements  ................................ ................................ ................................ ............  2 
4.2  Technical Requirement  ................................ ................................ ................................ ..........  3 
Acknowledgement  ................................ ................................ ................................ ................................ . 15 
 
Figures  
 
Figure 1.  Single Data Message Frame Format  ................................ ................................ ......................  5 
Figure 2.  Multiple  Data Message Frame Format  ................................ ................................ ...................  5 
Figure 3.  Successful attempt  ................................ ................................ ................................ .................  8 
Figure 4.  Unsuccessful attempt  ................................ ................................ ................................ .............  8 
Figure B1.  Data transmission associated with PSTN ringing signal  ................................ ....................  11 
 
Tables  
 
Table 1.  FSK Data Signal Parameters  ................................ ................................ ................................ ... 3 
Table 2.  Message Type for Calling Number Delivery Service  ................................ ...............................  6 
Table 3.  Message type for additional services  ................................ ................................ .......................  6 
Table 4.  Parameter type words for Call Setup message type  ................................ ...............................  6 
Table 5.  Handshaking Signal Characteristics  ................................ ................................ ........................  7 
Table C1.  Message format for A -CLIP service  ................................ ................................ ....................  12 
Table D1.  Off -Hook Parameter Values  ................................ ................................ ................................  13 
 
Annexes  
 
Annex A : Normative references  ................................ ................................ ................................ ..............  9 
Annex B : Data transmission associated with PSTN ringing signal  ................................ .......................  11 
Annex C : Message forma t for A -CLIP service  ................................ ................................ ......................  12 
Annex D : Off-Hook parameter values  ................................ ................................ ................................ ... 13 
 SKMM MTSFB TC T 002:2013  
 
iii 
  
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  organis ations:  
 
AJV Holding  Sdn Bhd 
Epson  Malaysia  
NEC  Corporation  of Malaysia  Sdn. Bhd. 
Packet  One Networks  (Malaysia)  Sdn. Bhd. 
SIRIM  QAS  International  Sdn Bhd 
Telekom  Malaysia  Berhad  
TIME  dot com 
Panasonic  Malaysia  
Panasonic  System  Networks  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 SKMM MTSFB TC T002 :2013 
iv 
  
FOREWORD  
 
 
This techn ical code for the Specification for Analogue Calling Line Identity Presentation (A -CLIP) 
Facility for Connection to Public Switched Telephone Network (PSTN)  (‘this Technical Code’) was 
developed pursuant to section 185 of the Act 588 by the Malaysian Techn ical Standard Forum 
Berhad (‘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 Tech nical Code  cancels  and replaces  Technical  Specification  for Analogue  Calling  Line Identity  
Presentation  (A-CLIP)  Facility  for Technical  Specification  for Connection  to Public  Switched  
Telephone  Network  (PSTN) , SKMM  FTS P ACLIP  Rev. 1.01:2007 . 
 
This Technic al Code  shall continue  to be valid and effective  until reviewed  or canceled . 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 SKMM MTSFB TC T002 :2013 
 
1 
 SPECIFICATION  FOR   
ANALOGUE  CALLING  LINE  IDENTITY  PRESENTATION  (A-CLIP)  FACILITY  FOR  
CONNECTION  TO PUBLIC  SWITCHED  TELEPHONE  NETWORK  (PSTN)  
 
 
1.  Scope  
 
This document  describes  the requirements  for terminal  equipment  (TE) intended  to operate  with 
Analogue  Calling  Line Identity  Presentation  (A-CLIP)  service  provided  by voice  band  on-hook  and off-
hook  data transmission.  
 
The timings  and signal  levels given  are from the TE’s perspective  and are referred  to the connection  
point  between  the network  and the TE. 
 
Caller  Display  on Call Waiting  is a service  where  caller  number  will be delivered  by off-hook  data 
transmission  using  multiple  data message  format and involves  handshaking  between  the TE and the 
network.  
 
 
2.   Normative  references  
 
The following  normative  references  are indispensable  for the application  of this document . For dated  
references,  only the edition  cited  applies.  For undated  referenc es, the latest  edition  of the normative  
references  (including  any amendments)  applies.  
 
See Annex  A. 
 
 
3.   Abbreviations  
 
For the purpose  of this document , the following  abbreviation  applies.  
 
AC Alternating  Current  
 
CLI 
 Calling  line 
CSS 
 Channel  Seizu re Signal  
DATA  
 Data  Transmission  
DC 
 Direct  Current  
ETSI  European  Telecommunications  Standards  Institute  
 
IEC International  Electrotechnical  Commission  
 
SI 
 Silent  Interval  
SKMM  Malaysian  Communications  and Multimedia  Commission  
 
T 
 Transition  time 
 
 
 
 SKMM MTSFB TC T002 :2013 
2 
  
4.  Requirements  
 
4.1   General  requirements  
 
4.1.1   Power  supply  requirements  
 
TE may be AC or DC powered.  For AC powered  TE, the operating  voltage  shall be 240 V +5 %, -10 
% and frequency  50 Hz ± 1 % as according  to MS 406 or 230 V ± 10 % and frequency  50 Hz ± 1 % as 
according  to MS IEC 60038  whichever  is current.   
 
Where  external  power  supply  is used,  e.g. AC adaptor  or battery,  it shall not affect  the capability  of the 
TE to meet  this specification.  
 
Adaptor  shall be pre-approved  by the relevant  regulatory  body  before  it can be used  with the TE. 
 
4.1.2   Power  supply  cord  and mains  plug  requirements  
 
TE shall be fitted  with a suitable  and appropriate  approved  power  supply  cord and mains  plug.  Both 
are regulated  products  and shall be pre-approved  by the relevant  regulatory  body  before  it can be 
used  with the TE. 
 
The power  supply  cord shall be certified  according  to: 
 
- MS 140; or 
 
- BS 6500;  or 
 
- IEC 60227 -5; or 
 
- IEC 60245 -4. 
 
The main  plug shall be certified  according  to: 
 
- 13 A fused  plugs:  MS 589: Part 1 or BS 1363:  Part 1; or 
 
- 2.5 A, 250 V, flat non-rewirable  two-pole plugs:  MS 1578  or BS EN 50075.  
 
4.1.3   Polarity  
 
The performance  of the TE shall be independent  of the PSTN  line polarity  i.e. the TE shall conform  to 
both polarities  of the line feeding (ETSI  ES 203 021-1, clause  A.3). 
 
4.1.4   Interoperability  and connectivity  requirements  
 
TE shall comply  with the minimum  requirement  that is specified  by the regulatory  body.  
 
4.1.4.1  Interoperability  
 
TE shall be able to exchange  information  and to use the information  that has been  exchanged  
between  two or more  systems  or components.  
 
4.1.4.2  Connectivity  
 
TE shall be able to link with other  programs  and devices  to allow  interoperability.  
 
 
 
 SKMM MTSFB TC T002 :2013 
 
3 
 4.1.5  Marking  requirements  
 
TE shall be marked  with the following  information:  
 
a) supplier/manufacturer’s  name  or identification  mark;  
 
b) supplier/manufacturer’s  model  or type reference;  and  
 
c) other  markings  as required  by the relevant  standards.  
 
The markings  shall be legible,  indelible  and readily  visible.  
 
4.1.6   Language  
 
All markings,  software  and related  documents  shall be in Bahasa  Melayu  or English  language.  
 
4.1.7   Electromagnetic  Compatibility  and electrical  safety  requirements  
 
4.1.7.1  TE shall comply  with the limits  for conducted  disturbance  at the mains  terminals  and 
telecommunication  ports,  and the limits  for radiated  disturbance  defined  in the IEC CISPR  22. 
 
4.1.7.2  TE shall comply  with the MS IEC 60950 -1 safety  standard.  The requirements  in MS IEC 
60950 -1 that are applicable  to the TE e.g. class of equipment,  type of telecommunication  network  
voltage  (TNV)  circuit  and types  of components]  shall be identified  and complied  with. 
 
4.2   Technical  Requirement  
 
4.2.1   Received  Data  Signal  Parameters  
 
TE shall be able to interact  properly  with the network  for voiceband  data transmission  by complying  
the following  received  data signal  parameters:  
 
Table  1. FSK Data  Signal  Parameters  
 
Link type simplex,  two wire 
Transmission  scheme  analogue,  phase  coherent  Frequency  Shift Keying  (FSK)  
Logical  1 (mark)/  
Logical  0 (space)  (1200  ± 12) Hz/ (2200  
± 22) Hz or 1300  Hz + 1.5%/  
2100  Hz + 1.5%  
Transmission  rate 1200  bit/s ± 12 bit/s 
Application  of data serial,  binary,  asynchronous  
Bit error  rate ≤ 1 out of 100,000  bits 
Phase  continuity  maintained  from beginning  of service  to end of message  
Receiver  sensitivity  -40 dBm ± 2 dBm 
Signal  to Noise  Ratio  15 dB 
Bit duration  833 ± 80 µs (start  and stop bits have  the same  duration  as a standard  bit) 
 
 
 
 
 
 
 
 SKMM MTSFB TC T002 :2013 
4 
 4.2.2    Data  message  format  
 
Data  message  shall be transmitted  in a series  of 8 bit data words  each  bounded  by a start bit (space)  
and stop bit (mark),  and segmented  according  to one of the two formats:  the Single  Data  Message  
Format  (SDMF)  or the Multiple Data  Message  Format  (MDMF)  as shown  in Figure  1 and Figure  2. 
 
4.2.2.1   Single  Data  Message  Format  (SDMF)  
 
A SDMF  defines  a message  consisting  of message  type,  message  length,  message  word  and 
checksum  word  which  is used  to detect  error.  The message  type,  message  length  and checksum  
shall consist  of one byte each.  The message  word  shall consist  of one byte or more  bytes.  The 
message  type contains  an assigned  value  for identifying  the service.  The message  length  indicates  
the number  of message  words  that follow  (excluding  the checksum  byte).  The message  words  shall 
be in alphanumeric  characters  using  8 bit word.  
 
4.2.2.2  Multiple  Data  Message  Format  (MDMF)  
 
A MDMF  defines  a message  consisting  of message  type,  message  length,  parameter  message  and 
error  detection  words.  The parameter  message  shall consist  of one or more  parameters.  Each  
parameter  consists  of a parameter  type,  parameter  length  and parameter  word.  The message  type,  
message  length,  parameter  type,  parameter  length  and checksum  word  each  shall consist  of one 
byte.  The message  word  within  the each  parameter  shall consist  of one or more  bytes.  As in the 
SDMF,  the message  type contains  an assigned  value  for identifying  the service  and the message  
length  indicates  the total number  of words  that follow  (excluding  the error  detection  word).  In addition,  
the MDMF  allows  parameter  messages  to include  several  features  to be received  within  the same  
frame.  The parameter  type contains  an assigned  value  used  to identify  the subsequent  message  
word(s).  The parameter  length  indicates  the number  of message  words  that follow  the preceding  
parameter  type word.  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 SKMM MTSFB TC T002 :2013 
 
5 
  
Figure  1. Single  Data  Message  
Frame  Format  
  Figure  2. Multiple  Data  Message  
Frame  Format  
 
 
 
 
Channel   
Seizure   
Signal   Channel   
Seizure   
Signal  
Mark   
Signal   Mark   
Signal  
Message  Type   Message  Type  
Mark  Bits (0-10)  Marks  Bits (0-10) 
Message  Length   Message  Length  
Mark  Bits (0-10)  Mark  Bits (0-10) 
Message  Word   Parameter  Type  
More  Message   
Words   
Mark  Bits (0-10) 
Mark  Bits (0-10)  Parameter  Length  
Checksum   Mark  Bits (0-10) 
  Parameter  Word  
  More  Parameter   
Words  
  More  Parameter   
Messages  
  Mark  Bits (0-10) 
  More  Messages  
  Checksum  
 
4.2.2.3  The data received  shall be in the order  of the least  significant  bit of each  data byte first. 
 
4.2.2.4  Message  words  not recognised  by the TE shall be ignored  (i.e. the corresponding  message  
shall not be displayed).  Recognition  shall be based  on the value  used  in the message  type.  
 
4.2.2.5  If TE recognises  the message  type of multiple  messages  but does  not recognise  one or more  
of the parameter  type words  within  the multiple  message,  the TE shall process  the message  as 
follows:  
 
a) all recognised  parameter  types  shall continue  to be processed  (i.e. the correspondin g message  is 
displayed);  and 
 
b) all unrecognised  parameter  type words  shall be ignored  (i.e. the corresponding  message  is not 
displayed).  1 byte (8 bits)  1 byte (8 bits)  SKMM MTSFB TC T002 :2013 
6 
  
 
4.2.2.6  On receiving  each  message  (single  or multiple)  the TE shall be able to switch  “ON”,  provide  
the message  to be displayed,  and then switch  “OFF”.  Single  messages  and/or  multiple  messages  
shall be received  in a sequence,  and therefore  the TE shall be caused  to switch  “ON”  and “OFF”  
several  times.  
 
4.2.3  Contents  of Message  
 
4.2.3.1  Message  type indicates  service  and/or capability  associated  with the message.  Values  for the 
message  type of the single  and multiple  messages  shall be in range  between  the binary  equivalence  
of 0 to 255. The single  messages  only supported  the Calling  Number  Delivery  Service.  The content  of 
the single  message  type word  in binary  shall be specified  in Table  2. 
 
Table  2. Message  Type  for Calling  Number  Delivery  Service  
 
Bit number  Value  Meaning  Type  of message  
76543210  00000100  Calling  Number  
Delivery  Information  Single  Message  
 
 
4.2.3.2  The multiple  message  type given  in Table  3 is expected  to be used  in new services  and in 
enhancements  to existing  service.  
 
Table  3. Message  type for additional  services  
 
Bit number  Value  Meaning  Type  of message  
76543210  10000000  Call Setup  Multiple  Message  
 
 
4.2.3.3  Values  for the parameter  type words  within  the multiple  messages  range  between  the 
binary  equivalence  of 0 to 255. The contents  of the parameter  type words  used  in the call setup  
multiple  message  by the PSTN  shall be as in Table  4. 
 
Table  4. Parameter  type words  for Call Setup  message  type 
 
Bit Number  Value  Meaning  
76543210  00000001  Date  and Time  
00000010  Calling  Line Identification  
00000100  Reason  for Absence  of DN 
00000111  Name  
 
4.2.3.4  For the on-hook  state,  the data transmission  may or may not associated  with ringing  signal.  
For example,  the visual  message  waiting  indication,  using  on-hook  data transmission  associated  
without  ringing  signal.  Data  transmission  associated  with PSTN  ringing  signal  shall be as in Annex  B. 
 
4.2.3.5  For on-hook  data reception,  each  Single  or Multiple  Message  shall preceded  by a Channel  
Seizure  Signal  and a Mark  (logic  1) Signal.  The purpose  of the Channel  Seizure  Signal  and the Mark  
Signal  is to alert and condition  the TE for the reception  of a message  frame.  The Chan nel Seizure  
Signal  shall consists  of a block  of 300 continuous  bits of alternating  “0”s and “1”s. The first bit to be 
received  is “0’ and the last bit is “1”. The Mark  Signal  shall consists  of 180 mark  bits. 
 
4.2.3.6  Message  formats  used  by PSTN  to convey  A-CLIP  Service  information  to TE shall be as in 
Annex  C. SKMM MTSFB TC T002 :2013 
 
7 
  
4.2.3.7  TE shall be capable  of storing  at least  12 characters.  The information  shall be displayed  on a 
narrower  display  if scroll ing is provided  such  that all 12 characters  can be displayed.  TE shall be able 
to display  either  lower  or upper  case  letters.  
 
4.2.3.8  When  Calling  Line (MDMF)  Identification  (CLI)  is Not Available,  TE shall be able to interpret  
reason  for Absence  of Caller  Name.  The reason  may be displayed  as received  in the first byte of the 
parameter  (the single  ASCII  characters  “P” or “O”). Messages  translated  to “Private”  or “Unavailable”  
and “Withheld”  or “Out Of Area”  are also acceptable.  
 
4.2.3.9  The parameter  byte for Network  Message  System  Status  indicates  when  messages  are 
waiting  in a message  system.  A value  of zero means  no messages  waiting,  a value  of 1 means  one or 
more  messages  waiting.  (Optional)  
 
4.2.3.10  TE that supports  Call Waiting  function  shall comply  as follows:  
 
For off-hook  data transmission,  a stable  call shall be interrupted,  and a clear,  voice -free channel  
established  in OSI time interval.  The PSTN  initiates  the process  within  W duration  by muting  
transmission  to and from the far end, and transmitting  the alerting  sequence  Subscriber  Alerting  
Signal  (SAS)  to alert the TE to new waiting  calls.  After  a short  period  of X1, the PSTN  transmit  the TE 
Alerting  Signal  (CAS)  to alert the TE to prepare  for data reception.  
 
Upon  detection  of the CAS,  TE shall mutes  the subscriber’s  handset  to prevent  near-end interference,  
attaches  a data receiver  to the line, and responds  to the PSTN  with an Acknowledge  Signal  (ACK)  
indicating  it readiness.  
 
The PSTN  shall wait for the ACK within  t1 period.  If ACK is detected,  the PSTN  shall begin  to transmit  
data after Q transition  time and re-establish  the voice  path by un-muting  the far-end shortly  after the 
end of data transmission.  At about  the same  time,  the TE shall un-mutes  the handset,  and the stable  
call is completely  re-established.  
 
In the event  that the PSTN  do not detects  ACK signal within  t1 period,  the data shall not be 
transmitted  and is called  unsuccessful  attempt.  The complete  stages  of the process  of the successful  
and unsuccessful  attempt  shall comply  with Figure  3 and Figure  4. The detailed  timing  requirements  
describing  this handshake  shall be as described  in Annex  D. 
 
The TE CAS and ACK shall meet  the characteristics  specified  in Table  5. 
 
Table  5. Handshaking  Signal  Characteristics   
 
Signal  CAS  ACK  
Frequency  (2130  + 11) Hz 
(2750  + 14) Hz 941 Hz + 1.5  
1633Hz  + 1  
Leve l Between  -32 dBm and 
-14 dBm pertone  Between  -12.0 dBm and 
-8.0 dBm (lower  tone)  
 
Between  -10.0 dBm and 
-6.0 dBm (upper  tone)  
 
Level  between  lower  tone and 
upper  tone shall be 1 dB to 4 dB 
higher  than the lower  tone 
 
 
 
 
 SKMM MTSFB TC T002 :2013 
8 
  
 
Figure  3. Successful  attempt  
 
 
OSI 
  
w  
SAS  
X1 
  
CAS  
t1  
Q 
  
FSK data 
transmission   
OSI  
S  
re-establish  voice  path 
 
 
Figure  4. Unsuccessful  attempt  
 
 
OSI 
  
w  
SAS  
X1 
  
CAS  
t1  
OSI  
S  
re-establish  
voice  path 
 
 
 
4.2.4  Error  Detection  
 
The last word  of the Single  or Multiple  Messag e is a checksum  word.  The checksum  word  shall 
contains  two’s  complement  of the modulo  256 sum of each  bit in all the other  words  in the message.  
At the TE, checksum  shall be recomputed  and compared  with the checksum  word  received  in the 
message.  The receiv ed message  is considered  to be error  free if both values  are identical.  This 
approach  is not able to detect  all transmission  errors.  Specifically,  it cannot  detect  offsetting  bit errors  
occurring  in the same  message.  
 
If TE detects  an error,  none  of the received  message  shall be displayed.  TE shall not send  a message  
to indicate  that an error  has been  detected  as the PSTN  would  not retransmit  the data.  Error  
correction  is not supported  by this protocol.  
 
 SKMM MTSFB TC T002 :2013 
 
9 
  
Annex  A  
(Normative)  
 
 
Normative  references  
 
 
BS 1363: Part 1 13 A plugs,  socket -outlets,  adaptors  and connection  units  - Part 1: 
Specification  for rewirable  and non-rewirable  13 A fused  plugs  
 
BS 6500  Electric  cables  Flexible  cords  rated  up to 300/500  V, for use with 
appliances  and equipment  intended  for domestic,  office  and similar  
environments  
 
BS EN 50075  
 Specification  for flat non-wirable  two-pole plugs  2.5 A 250 V, with 
cord,  for the connection  of class  II-equipment  for household  and 
similar  purposes  
 
GR-30-CORE  Issue  1, 
December  1994  Voiceband  Data Transmission  Interface  
 
 
ETSI  300 001 Attachments  to Public  Switched  Telephone  Network  (PSTN);  
General  technical  requirements  for equipment  connected  to an 
analogue  subscriber  interface  in the PSTN  
 
ETSI  ES 203 021 Terminal  Equipment  (TE);  Attachment  Requirements  for pan-
European  approval  for connection  to the analogue  Public  Switched  
Telephone  Networks  (PSTNs)  to TE (excluding  TE supporting  the 
voice  telephony  service)  in which  network  addressing,  if provided,  
is by means  of Dual Tone  Multi  Frequency  (DTMF)  signalling  
 
IEC 60227 -5 
 Polyvinyl  chloride  insulated  cables  of rated  voltages  up to and 
including  450/750  V - Part 5: Flexible  cables  (cords)  
 
IEC 60245 -4 
 Rubber  insulated  cables  - Rated  voltages  up to and including  
450/750  V - Part 4: Cords  and flexible  cables  
 
IEC CISPR  22 Information  Technology  Equipment  - Radio  disturbance  
characteristics  - Limits  and methods  of measurement  
 
ITU-T Recommendation  E.161 Arrangement  of digits,  letters  and symbols  on telephones  and 
other  devices  that can be used for gaining  access  to a telephone  
network  
 
 SKMM MTSFB TC T002 :2013 
10 
  
ITU-T Rec. T.50 Terminal  equipment  and protocols  for telematic  services  
 
MS 140 
 Specification  for insulated  flexible  cords  and cables  
MS 1578  
 Specification  for flat non-rewirable  two-pole plugs,  2.5 A, 250 V, with 
cord,  for the connection  of class  II-Equipment  for household  and 
similar  purposes  
 
MS 406 
 Specification  for voltages  and frequency  for alternating  current  
transmission  and distribution  systems  
 
MS 589: Part 1 
 Specification  for 13 A plugs,  socket  outlets,  adaptors  and connection  
units  Part 1: Specification  for rewirable  and non-rewirable  13 A fused  
plugs  
 
MS IEC 60038  
 IEC standard  voltages  
 
MS IEC 60950 -1 Information  technology  equipment  - Safety  - Part 1: General  
requirements  
 
SKMM  MTFSB  TC T001:  
2012  
 Specification  for Terminal  Equipment  connecting  to the Public  
Switched  Telephone  Network  (PSTN)  
 
SKMM  MTFSB  TC T002:  
2012  
 Specification  for Analogue  calling  line Identity  presentation  (A-CLIP)  
facility  for connection  to Public  Switched  Telephone  Network  (PSTN)  
 
 
 
 
 
 
 
 
 
 
 
 
 SKMM MTSFB TC T002 :2013 
 
11 
  
Annex  B 
(Normative)  
 
 
Data  transmission  associated  with PSTN  ringing  signal  
 
 
One ringing  cycle  
 
 
FIRST  
RINGING  
  
SI  
CSS  
MS  
DATA   
T  
SECOND  
RINGING  
 
2 second s 
 
Parameter  Value  Descriptions  
Ringing  
Current  0.4 s ON, 0.2 s 
OFF,  0.4 s ON, 
2.0 s OFF One ringing  cycle  
SI (0.25  -0.5) s Silent  interval  before  transmission  of data message  from 
PSTN  to TE 
CSS 0.2 s Channel  Seizure  Signal  
MS 0.15 s Mark  Signal  
DATA  ≥ 200 ms Data  Transmission  shall stop at least  200 ms before  the arrival  
of the second  ringing  cycle.  
T ≥ 200 ms Transition  time between  data transmission  and the second  
ringing  where  T shall not be less than 200 ms. 
 
Figure  B1. Data  transmission  associated  with PSTN  ringing  signal   
 
 
 
 
 
 
 
 SKMM MTSFB TC T002 :2013 
12 
  
 
Annex  C 
(Normative)  
 
 
Message  format  for A-CLIP  service  
 
 
Table  C1. Message  format  for A-CLIP  service  
 
Calling  Line (SDMF)  
Identification  (CLI)  Calling  Line (MDMF)  
Identification  
(CLI)  and Name  Calling  Line (MDMF)  
Identification  
(CLI)  Not 
Available  
Date  Date  Date  
Time Time  Time  
 CLI Reason  for absence  
of Directory  
Number  (DN):  
 
“P” or “O” 
CLI Name  
(caller’s  name  if 
provided)  
 Name:  
 
For “P” 
“PRIVATE”  
fixed  characters  
may be sent 
 
For “O” 
“OUT”  may be sent 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 SKMM MTSFB TC T002 :2013 
 
13 
  
Annex  D 
(Normative)  
 
 
Off-hook  paramete r values   
 
 
Table  D1. Off-Hook  Parameter  Values  
 
 
Parameter  and 
Assignment   
Value   
Descriptions  
 
OSI  
(0-300) ms  
An open  interval  (OSI)  where  do voltage  applied  between  tip 
and ring on the line is removed,  hence,  temporarily  
suspending  line supervision  and transmission.  
 
 
W  
(0-60) ms  
The PSTN  mutes  for end for this period  prior to sending  an 
Alerting  Sequence  in the absence  of an OSI. 
 
 
  
100=10ms  
(90-110)  
The PSTN  continues  to silence  the far and for this period  
following  in OSI 
 
 
X  
(250 ms-1 
sec)  
Duration  allowed  for any SAS including  distinctive  patterns.  
The service  specific  requirements  document  will contain  
information  on the timing  of the various  service -specific  
tones/patterns.  
 
 
X1  
(0-50) ms  
The PSTN  is allowed  this transition  time betw een the 
generation  of different  alerting  signals.  
 
 
Y 
 
  
(80-85)ms   
Length  of the TE Alerting  Signal  (CAS)  
 
 
t1  
160 5 ms 
(155-165)  
Acknowledgment  time-out. 
Period  that the PSTN  waits  for an ACK.  The PSTN  shall time 
out after 165ms  if it does  not detec t an ACK.  Upon  detection  
of an ACK,  timing  for interval  t1 should  be stopped,  and timing  
for interval  Q should  start.  
 
 
 
 
 
 
 
 SKMM MTSFB TC T002 :2013 
14 
 Q (50-500) ms 
Strong  
Objective:  
50-100 Transition  between  detection  of an ACK and the start of P5K 
data transmission.  
 
Z Feature -
specific   
Time  taken  to transmit  data feature -dependent.  
. 
S (0-320) ms 
Strong  
Objective:  
0-120 Time  taken  by the PSTN  to revert  back  to voice  transmission  
after the end of data transmission  or after the end of an OSI if 
an OSI occurs.  
 
 
 
 
 
 
 SKMM MTSFB TC T002 :2013  
 
Acknowled gements  
 
 
Members  of the Fixed  Terminal  Working  Group : 
 
Abd. Hamid  Mustafa  (Chairman)  Telekom  Malaysia  Berhad  
Ahmad  Faizan  Pardi  (Vice  Chairman)  SIRIM  QAS  International  Sdn Bhd 
Nur Rashidah  Abas  Azmi  (Secretary)  Telekom  Malaysia  Berhad  
Shahadan  Man  AJV Holding  Sdn Bhd 
Zulkhairi  Zainal  Abidin  Epson  Malaysia  
Tan Keok  Kuang   NEC  Corporation  of Malaysia  Sdn Bhd 
Pang  Chieng  Yong   Panasonic  Malaysia  
Sam Choong   Panasonic  Malaysia  
Mohd  Ackmal  Abd. Samad   Panasonic  System  Networks  
Hafizah  Zainal  Abiddin   SIRIM  QAS  International  Sdn Bhd 
Nurhafenah  Abdul  Jalil SIRIM  QAS International  Sdn Bhd 
Zul Jaafar  SIRIM  QAS  International  Sdn Bhd 
Amin  Hapis  Khairan  Telekom  Malaysia  Berhad  
Badar iah Zainal  Telekom  Malaysia  Berhad  
Mazram  Idzuny  Telekom  Malaysia  Berhad  
Md Azmi  Karnain  Telekom  Malaysia  Berhad  
Mohamad  Ali Abu Bakar   Telekom  Malaysia  Berhad  
Mohd  Syaukiazahar  Telekom  Malaysia  Berhad  
Muhd  Hadzir  Abu Hassan  Telekom  Malaysia  Berhad  
Nor Maizatul  Syima   Telekom  Malaysia  Berhad  
Nur Faliza  Yaakup  Telekom  Malaysia  Berhad  
Raja Nor Suha  Telekom  Malaysia  Berhad  
Rosliza  Abu Bakar   Telekom  Malaysia  Berhad  
Suriyati  Rahim  Telekom  Malaysia  Berhad  
Wan Nur Hanani  Telekom  Malaysia  Berhad  
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