PHS MoU Document
C-IF2.01-03-TS
Title : PHS-FWA System : Interface Specifications between FWA
Subscriber Unit or FWA personal Station and FWA Cell Station(Common Air Interface)Version: 03
Date: June 7, 2000
PHS MoU Classification: Unrestricted
List of contents :
1.
2.
3.

GeneralInterface Specifications
Comments for Implementation
3.1 Calling Number Delivery
3.2 DTMF Signal transmission
3.3 Originating Call from Ground Start PBX
3.4 Direct Dialling In (DDI) Service
3.5 Howler Tone Sending
3.6 Channel Switching During Communication
3.7 Emergency Call Connection
3.8 Emergency Call Holding
4. References

Appendix A - The usage of “IA5 character code” of ITU-T recommendation in
the “test result” area of test result element

Number of pages: 10PHS MoU Group
c/o Association of Radio Industries and Businesses (ARIB)
14F, Nittochi Bldg., 4-1, Kasumigaseki, 1-choume, Chiyoda-ku, Tokyo 100-0013, Japan
TEL +81-3-5510-8599 FAX +81-3-3592-1103© PHS MoU Group 2000

PHS MoU Document
C-IF2.01-03-TS
Version01

History of Revised Versions
DateOutline
Dec. 17, 1996 Established02

Dec. 19, 1997

03

June 7, 2000

Table 1-1/C-IF2.01 regarding Overlap sending andSubscriber line test transmission is added.
Appendix A regarding the usage of IA5 character codein the test result area is added.
Changed all WLL into FWA.
Clause 2 and Sub-clause 3.7 are changed.
Sub-clause 3.8 is added and Clause 5 is deleted.
In Figure 3.4/C-IF2.01, “UP message” is corrected to“SETUP message”.

C-IF2.01-03-TS
PHS-FWA System: Interface Specifications
between FWA Subscriber Unit or FWA personal Stationand FWA Cell Station(Common Air Interface)- based on RCR STD-28 Appendix AB Contents
1. General ..........................................................................................................................................

1

2. Interface Specifications.................................................................................................................

1

3. Comments for Implementation......................................................................................................

23.1 Calling Number Delivery ......................................................................................................

2

3.2 DTMF Signal transmission ...................................................................................................

2

3.3 Originating Call from Ground Start PBX .............................................................................

3

3.4 Direct Dialling In (DDI) Service...........................................................................................

4

3.5 Howler Tone Sending ...........................................................................................................

5

3.5.1 Case 1:Howler Tone Sending by WSU (TE uses in-band tone/announcement
when tone/announcement is offered from SN) .........................................................

5

3.5.2 Case 2:Howler Tone Sending by WSU (TE doesn't use in-bandtone/announcement when tone/announcement is offered from SN) .....................................

63.5.3 Case 3:Howler Tone Sending by WSU (when tone/announcement are not offeredfrom SN) ...................................................................................................................

7

3.5.4 Case in which Howler Tone can’t be sent by WSU (when release signals are notoffered from SN).......................................................................................................

8

3.6 Channel Switching During Communication .........................................................................

9

3.7 Emergency Call Connection..................................................................................................

9

3.8 Emergency Call Holding.......................................................................................................

94. References.....................................................................................................................................

9Appendix A - The usage of "IA5 character code" of ITU-T recommendation in the "test result"area of test result element................................................................................................................... 10C-IF2.01-03-TSi1. General
The same specification as is specified in RCR STD-28 Appendix AB is applied except for the detailed
specifications described in clause 2.
2. Interface Specification
This Interface Specification is fundamentally based on RCR STD-28 Appendix AB. This clausedescribes only the parts detailed from RCR STD-28 Appendix AB and except for the detailed items,
this Interface specification conforms to RCR STD-28 Appendix AB.
Regarding Subscriber line test signal transmission, the detailed specifications are summarized in thefollowing table. (Table 1-1/C-IF2.01)
Remarks
As the expression is fundamentally based on RCR STD-28 Appendix AB, the terminologies like as"PS" or "CS" are used in this clause. In this clause, PS always means WPS or WSU. And CS always
means WCS.
Table1-1/C-IF2.01 Detailed specifications from RCR STD-28 Appendix AB
Item
Detailed specifications
Attached document 4
2. Supplementary services overview
In case of A, measured value is coded in "testitem Subscriber line test signal transmissionresult" area in test result element (IA5 charactercode" of ITU-T recommendation).

C-IF2.01-03-TS

1

3. Comments for Implementation
3.1 Calling Number Delivery
Originating ID is sent with Calling Party Number information element contained in SETUP message
in both case of Originating Call and Terminating Call.
3.2 DTMF signal transmission
DTMF signal transmission is a function by which DTMF signals are transmitted from WSU or WPS
to WCS. By this function WCS receives DTMF signal information as a call control (CC) messages,and generates DTMF tone. WSU also will have a function by which DTMF tone is directlytransmitted to SN via traffic channel. In case of WSU if the both functions work at the same time,
DTMF tones will be collided at SN, so it is avoided this case.

2C-IF2.01-03-TS

3.3 Originating Call from Ground Start PBX
In case of Originating Call from Ground Start PBX, Steady-signal can be included in SETUP
message to the CS side.
WCSWSU

Li nk channel est abl i s hment r eque st

SCCH

Li nk channel

SCCHass i gnment

Synchr oni zat i on bur st
Synchr oni zat i on bur st
SABM( not e 3)

FACCH&SACCHUA

FACCH&SACCHI

CCSETUP( not e 5)

SACCH/ FACCHI

CC

Cal l pr oceedi ng

SACCH/ FACCHI

RT

Def i ni t i on i nf or mat i on r equest ( not e 1)

SACCH/ FACCHI

RT

De f i ni t i on i nf or mat i on r esponse ( not e 2)

SACCH/ FACCHI

RTFunct i on r equest ( not e 1)

SACCH/ FACCHI

RTFunct i on r equest r espons e( not e 2)

IRT

Enc r ypt i on key se t

SACCH/ FACCHI

MMFunct i on r equest ( not e 1)

SACCH/ FACCHIMM

Funct i on r equest r esponse ( not e 2)

IMMAut hent i c at i on r equestI

MMAut hent i c at i on r es pons e
DI SC( not e 4)CC

Al er t i ng

I

CCConnect

SACCH/ FACCH
SACCH/ FACCH
SACCH/ FACCH
FACCH

UA
I

SACCH/ FACCH

FACCH
SACCH
RBT
SACCH
Communi cat i on i n pr ogr e ss

(note 1)
(note 2)
(note 3)
(note 4)(note 5)This control signal can be omitted as necessary.
This control signal is for the previous control signal with the (note 1) attached.
It is transmitted only when the relevant control signal is received.
The layer 3 sequence of the service channel establishment phase is activated after theFACCH layer 2 multiframe acknowledged operation mode is established.
Before layer 2 DISC transmission on FACCH, the layer 2 multiframe acknowledged
operation mode should be established on SACCH.
Steady-signal information element can be included in this message as necessary.
Figure 3.3/C-IF2.01 Originating call sequence from Ground Start PBX

C-IF2.01-03-TS3

3.4 Direct Dialling In (DDI) ServiceWCS

WSU
Pa gi ng• is ubsc r i be r numbe r • j

PCH

Li nk cha nne l e st a bl i s hme nt r eque s t

SCCH

Li nk cha nne l

SCCH

as s i gnme nt

Synchr oni z a t i on bur stSynchr oni z a t i on bur stSABM( not e 3)

FACCH&SACCHUA

FACCH&SACCHI

RTPa gi ng r e s ponse

SACCH/ FACCHI

CCSETUP( not e 5)

SACCH/ FACCHI

CC

Cal l pr oc ee di ng

SACCH/ FACCHI

RT

Def i ni t i on i nf or ma t i on r e que s t ( not e 1)

SACCH/ FACCH

IRTI

RT

Func t i on r e que s t ( not e 1)

I

RT

Func t i on r e que s t r es ponse ( not e 2)

IRT

Enc r ypt i on key se t

SACCH/ FACCHI

MMFunc t i on r e que s t ( not e 1)

SACCH/ FACCHI

MMFunc t i on r e que s t r es ponse ( not e 2)I

MMAut he nt i ca t i on r e ques t

I

MMAut he nt i ca t i on r e spons eICC

Al e r t i ng

SACCH/ FACCHI

CCConnec t

SACCH/ FACCH

ICC

Connec t a cknowl edge

SACCH/ FACCHDI SC( not e 4)

FACCH

Def i ni t i on i nf or mat i on r e s ponse ( not e 2)

UA

SACCH/ FACCH
SACCH/ FACCH
SACCH/ FACCH

SACCH/ FACCH
SACCH/ FACCH
SACCH/ FACCH

FACCHCommuni c at i on i n pr ogr es s

(note 1)
(note 2)
(note 3)
(note 4)(note 5)This control signal can be omitted as necessary.
This control signal is for the previous control signal with the (note 1) attached.
It is transmitted only when the relevant control signal is received.
The layer 3 sequence of the service channel establishment phase is activated after theFACCH layer 2 multiframe acknowledged operation mode is established.
Before layer 2 DISC transmission on FACCH, the layer 2 multiframe acknowledged
operation mode should be established on SACCH.
Extension number is set to Called Party Number information element contained in SETUP
message.
Figure 3.4/C-IF2.01 Terminating call sequence in DDI service

4C-IF2.01-03-TS

3.5 Howler Tone Sending
Howler Tone Sending is out of scope of RCR STD-28 Appendix AB. This function is option in thissystem. Examples of Howler Tone Sending sequence is described in this section in various case ofclearing initiated by network. Howler Tone Sending on WSU side may be started by expiration of thetimer for supervision of "long time off-hook" or by receiving the Release message containing cause#102 "Recovery due to timer expiration".
3.5.1 Case 1:Howler Tone Sending by WSU (TE uses in-band tone/announcement when
tone/announcement is offered from SN)

WCS

WSU

Communi cat i on i n pr ogr es sICCDi s connect ( PI ( #8) )

SACCH
BT

Howl erICC

Rel eas e( CAUSE( #102) )

SACCH

ICC

Rel eas e compl e t e

SACCH

DI SC

SACCHUASACCHUI

RTRadi o- channel di s connect

UI

RTRadi o- c hannel di s connect compl et e

FACCH
FACCH

Figure 3.5.1/C-IF2.01 Case 1:Howler Tone Sending by WSU

C-IF2.01-03-TS5

3.5.2 Case 2:Howler Tone Sending by WSU (TE doesn't use in-band tone/announcement when
tone/announcement is offered from SN)

WCS

WSU

Communi cat i on i n pr ogr es sI

CCDi s connect ( PI ( #8) )

SACCH

ICC

Rel eas e

SACCHI

CCRel eas e compl e t e

SACCHBTDI SCSACCH

UA

SACCH

UI

RT

Radi o- channel di s connect

UI

RTRadi o- c hannel di s connect compl et e

FACCH
FACCH

Howl erT. O.

Figure 3.5.2/C-IF2.01 Case 2:Howler Tone Sending by WSU

6C-IF2.01-03-TS3.5.3 Case 3:Howler Tone Sending by WSU (when tone/announcement are not offered from SN)

WCS

WSU

Communi cat i on i n pr ogr es sICCDi s connect

SACCH

ICC

Rel eas eSACCHICC

Rel eas e compl e t e

SACCHBT

DI SC

SACCH

UASACCHUI

RTRadi o- channel di s connect

UIRTRadi o- c hannel di s connect compl et e

FACCH
FACCH

Howl erT. O.

Figure 3.5.3/C-IF2.01 Case 3:Howler Tone Sending by WSU

C-IF2.01-03-TS7

3.5.4 Case in which Howler Tone can’t be sent by WSU (when release signals are not offeredfrom SN)WCS

WSUCommuni cat i on i n pr ogr es sBTI

CCDi s connect

SACCHICC

Rel eas e

SACCHICC

Rel eas e compl e t eSACCHDI SCSACCHUASACCHUIRTRadi o- channel di s connect

UIRTRadi o- c hannel di s connect compl et e

FACCH
FACCH

Figure 3.5.4/C-IF2.01 Case in which Howler Tone can’t be sent by WSU

8C-IF2.01-03-TS

3.6 Channel Switching During Communication
This function conforms to RCR STD-28 Appendix AB.
3.7 Emergency Call Connection
In this sub-clause, an example about communication method of Emergency Call Connection isdescribed.
For originating emergency call, in this system, link channel establishment request or link channelestablishment re-request contains information of call type. If emergency call has be request from TE,
WSU sends link channel establishment request as call type (octet 5) is set to (01)"emergency call" toWCS. In case of non-emergency call, WSU sends link channel establishment request as call type(octet 5) is set to (00)"general call" to WCS.
The treatment on WCS side depends on operator implementation, after recognizing link channel
establishment request for originating emergency call.
3.8 Emergency Call Holding
Emergency call holding procedure depends on operator implementation.
4. Reference• Personal Handy Phone System ARIB standard (RCR STD-28)• Test items and conditions for public personal station compatibility confirmation (RCR STD-28)

C-IF2.01-03-TS

9

Appendix A - The usage of "IA5 character code" of ITU-T recommendation in the "test result"area of test result element
The usage of "IA5 character code" of ITU-T recommendation in the "test result" area of test result
element is specified as follow.
• A decimal point accounts for 1 figure ,when it is put in measured value.
• A unit of resistance value is an ohm, a unit of capacity is PF and a unit of voltage is V,
but each measured value doesn't give a unit.
• When scale of measured value(ex. K,M etc.) is necessary, alphabet is given after measured value.
• When infinity is necessary as measured value, "infi" code is substituted for measured value.
• When distinction of plus and minus is necessary for measured value, + (plus) or - (minus)
is given before measured value of its measurement item.

10

C-IF2.01-03-TS