PHS MoU Document
C-IF3.03-02-TS
Title: PHS-FWA System : Interface Specification between FWA AccessController and Service Node - ITU-T G.965:V5.2 InterfaceVersion: 02
Date: June 7, 2000
PHS MoU Classification: Unrestricted
List of contents:

1. General
2. Interface Specification
3. Comments for Implementation
4. References

Annex L

Number of pages: 21

PHS 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 DocumentC-IF3.03-02-TS
VersionHistory of Revised Versions
DateOutline

01

Dec. 17, 1996 Established

02

June 7, 2000

Changed all WLL into FWA.
Clause 2,6 are deleted.
ISDN specification is added

C-IF3.03-02-TS
PHS-FWA System:
Interface Specification between FWA Access Controller and Service Node-ITU-T G.965 : V5.2 Interface-

1. General
This specification defines a V-interface (V5.2) for the connection of a FWA Access Controller(WAC)
and a Service Node (SN) for the support of the following access types:– analogue telephone access;– ISDN basic access;– other analogue or digital accesses for semi-permanent connections without associated outband signalling information,with flexible information channel (bearer channel) allocation on a call by call and pre-connected basis
which provides concentration capability within the WAC.
This specification is based on C-IF3.02 and refers to it for those parts which are common in both
specification.

Major differences between the V5.1 interface and the V5.2 interface
The V5.1 Recommendation (C-IF3.02) is a complete Recommendation in itself whereas this V5.2
Recommendation references parts of V5.1 Recommendation.
V5.1 uses only one 2048 kbit/s link whereas V5.2 may use up to sixteen (16) 2048 kbit/s links on oneinterface.
V5.1 does not support concentration whereas V5.2 is inherently designed to support it using a dedicated protocol known as the Bearer Channel Connection (BCC) protocol.
V5.1 has no concept of communication channel protection whereas this function is available for V5.2
when that particular V5.2 interface uses more than one 2048 kbit/s link. A specific protocol, known as
the protection protocol, is provided for this function.
The control protocol for V5.2 is slightly modified to that used for V5.1.
A link control protocol is specified for V5.2 as multiple links have to be managed.

C-IF 3.03-02-TS

1

Annex A
Examples of PSTN sequence on V5.2 interface(1)

Originating call ( Successful call setup )(note) This sequence includes Ground Start PBX call steup.
refer to Figure A.1/C-IF3.03(2)

Originating call ( no answer signal sent to the original line )refer to Figure A.2/C-IF3.03(3)

Originating call ( answer signal sent to the original line )refer to Figure A.3/C-IF3.03(4)

Originating call ( coin box with meter pulse )refer to Figure A.4/C-IF3.03(5)

Originating call ( clear the call )refer to Figure A.5/C-IF3.03(6)

Originating call ( clear back )refer to Figure A.6/C-IF3.03(7)

Originating call ( timeout after calling party clears )refer to Figure A.7/C-IF3.03(8)

Terminating call ( normal successful call setup )(note) This sequence includes Direct Dial In procedure.
refer to Figure A.8/C-IF3.03(9)

Terminating call ( called subscriber does not answer )refer to Figure A.9/C-IF3.03(10) Terminating call ( called subscriber re-answerd )refer to Figure A.10/C-IF3.03(11) Terminating call ( Hooking signal from called subscriber )refer to Figure A.11/C-IF3.03(12) Special Features( CLIP: Calling Line Identification Presentation , CASE1 )refer to Figure A.12/C-IF3.03(13) Special Features( CLIP: Calling Line Identification Presentation , CASE2 )refer to Figure A.13/C-IF3.03

2C-IF3.03-02-TS

(14) Special Features ( Three Way Calling )refer to Figure A.14/C-IF3.03(15) Semi-normal sequence( on hook before receives ESTABLISH ACK )refer to Figure A.15/C-IF3.03(16) Semi-normal sequence( abandoned during ringing )refer to Figure A.16/C-IF3.02(17) Semi-normal sequence( Call Collision )refer to Figure A.17/C-IF3.02(18) Layer 3 Error ( Message lost in WAC )refer to Figure A.18/C-IF3.02(19) Layer 3 Error ( Message lost in SN )refer to Figure A.19/C-IF3.02(20) Layer 3 Error( Unexpected Message in WAC , V5-state in SN uncompatible )refer to Figure A.20/C-IF3.02(21) Layer 3 Error( Unexpected Message in SN , V5-state in WAC uncompatible )refer to Figure A.21/C-IF3.02(22) Layer 3 Error( Unrecognige B-subscriber or destination )refer to Figure A.22/C-IF3.02(23) Layer 3 Error( Bearer channel allocation unseccessfully completed before first Tbcc1 expiry )refer to Figure A.23/C-IF3.02(24) Layer 3 Error( Bearer channel allocation unseccessfully completed after first Tbcc1 expiry )refer to Figure A.24/C-IF3.02

C-IF3.03-02-TS3

(1) Originating call ( Successful call setup )WAC

SN
ESTABLISH

originating

ESTABLISH ACKALLOCATION
ALLOCATION COMPLETE

SIGNAL[digit-signal]
SIGNAL[digit-signal]
SIGNAL[digit-signal]•••
SIGNAL[digit-signal]
Alerting(note2)

SIGNAL ACK(note1)

Ringing back tone

(note1) The SIGNAL ACK message shall be sent when the receiving timer of the SIGNAL message
was time out.
(note2) The Alerting message shall be sent because speech-channel on air is not opened,yet.
Figure A.1/C-IF3.03

4C-IF3.03-02-TS

(2) Originating call ( no answer signal sent to the original line )WAC

SN
Ringing back tone
answeredcommunication in progress
Figure A.2/C-IF3.03(3) Originating call ( answer signal sent to the original line)
WAC

SN
Ringing back tone

reverse polarity

SIGNAL[steady-singnal]answered

SIGNAL ACK
communication in progress
Figure A.3/C-IF3.03(4) Originating call ( coin box with meter pulse)
WAC

SN
Ringing back tone

reverse polarity

SIGNAL[steady-singnal]

metering signal

SIGNAL[pulsed-signal]answeredSIGNAL ACK
communication in progress
Figure A.4/C-IF3.03

C-IF3.03-02-TS

5(5) Originating call ( clear the call )WAC

SNcommunication in progress
SIGNAL[steady-signal]
on-hook
DISCONNECT
clear the call
DE-ALLOCATIONDISCONNECT COMPLETE
DE-ALLOCATION COMPLETE

Figure A.5/C-IF3.03(6) Originating call ( clear back )WAC

SNcommunication in progressclear back
SIGNAL[steady-signal]
normal polarity
SIGNAL ACK(note)
on-hook

SIGNAL[steady-signal]
DISCONNECT
clear the call
DE-ALLOCATIONDISCONNECT COMPLETE
DE-ALLOCATION COMPLETE(note) WAC may not transmit normal polality signal.
Figure A.6/C-IF3.03

6C-IF3.03-02-TS

(7) Originating call ( Timeout after called party clears )WAC

SN

communication in progresscalled party clears
re-answer timing
Time out
connect busy tone
BTon hook

SIGNAL[steady-signal]

X stop tone
DISCONNECT
clear the call
DE-ALLOCATIONDISCONNECT COMPLETE
DE-ALLOCATION COMPLETE

Figure A.7/C-IF3.03

C-IF3.03-02-TS

7

(8) Terminating call ( normal successful call setup )WAC

SN

ALLOCATION
call terminates
ALLOCATION COMPLETEESTABLISH
ringing startedESTABLISH ACK

Answerd

SIGNAL[steady-signal]
SIGNAL ACK

communication in progress
Figure A.8/C-IF3.03

8C-IF3.03-02-TS

(9) Terminating call ( called subscriber does not answer )WAC

SN

ALLOCATION
call terminates
ALLOCATION COMPLETEESTABLISH
ringing started
ESTABLISH ACK
no ansewr
timingringing stopped

DISCONNECT
DE-ALLOCATIONDISCONNECT COMPLETE
DE-ALLOCATION COMPLETE(note) This sequence is used to wake-up service or effectivity utility of radio channel, etc.
Figure A.9/C-IF3.03

C-IF3.03-02-TS

9

(10) Terminating call ( called subscriber re-answerd )WAC

SNcommunication in progress
SIGNAL[steady-signal]
on hook

SIGNAL ACK
re-answer timing
SIGNAL[steady-signal]

off hook

SIGNAL ACK

communication in progress•

Figure A.10/C-IF3.03(11) Special Features ( Hooking signal from called subscriber )WAC

SNcommunication in progress

SIGNAL[pulsed-signal](note)

hooking signal
SIGNAL ACK
actiondepends on service(note) Hooking signal use register recall of pulse type.
Figure A.11/C-IF3.03

10C-IF3.03-02-TS

(12) Special Features( CLIP: Calling Line Identification Presentation ,CASE1 )WAC

SN

ALLOCATION
ALLOCATION COMPLETE

call terminates

ESTABLISHESTABLISH ACKSIGNAL[CLI-information]
Start ringing with
CLI information

SIGNAL ACKSIGNAL[steady-signal]answered
SIGNAL ACK

communication in progress

Figure A.12/C-IF3.03

C-IF3.03-02-TS

11

(13) Special Features( CLIP: Calling Line Identification Presentation , CASE2 )WAC

SN

ALLOCATION
call terminates
ALLOCATION COMPLETEESTABLISHESTABLISH ACKSIGNAL[end of pulse]
SIGNAL[digit-signal]••
SIGNAL[digit-signal]
SIGNAL[cadenced ringing]pagingFigure A.13 /C-IF3.03

12C-IF3.03-02-TS

(14) Special Features ( Three Way Calling)
partyWACSN

communication in progress ( A-B )SIGNAL[pulsed-signal]A-B connection is cut
hooking signal

SIGNAL ACK
connect DT
DT
DTMF tone

X stop DT

digit dial
DTMF tone
digit dial•••
DTMF tone
digit dial
Ringing back tone

start call setup
to party C

answerd by C
communication in progress ( A-C)
SIGNAL[pulsed-signal]
hooking signal

SIGNAL ACK

communication in progress ( A-B-C )Figure A.14 /C-IF3.03

C-IF3.03-02-TS13

(15) Semi-normal sequence( on hook before receives ESTABLISH ACK )WAC

SNESTABLISH

orignating
on hook

ESTABLISH ACKALLOCATIONDISCONNECT
ALLOCATION COMPLETE
DISCONNECT COMPLETE
DEALLOCATION

DEALLOCATION COMPLETE
Figure A.15/C-IF3.03

14C-IF3.03-02-TS

(16) Semi-normal sequence( abandoned during ringing )WAC
ESTABLISH

SN

orignating
ESTABLISH ACKALLOCATION
ALLOCATION COMPLETE
start call setup
SIGNAL[steady-signal]
on hookclear the call
DISCONNECT
DE-ALLOCATIONDISCONNECT COMPLETE
DE-ALLOCATION COMPLETE

Figure A.16/C-IF3.03(17) Semi-normal sequence ( Call Collision)
WAC
originatingSN
call terminates

ALLOCATION
ALLOCATION REJECTESTABLISHESTABLISH ACKALLOCATION
ALLOCATION COMPLETE

ringing back tone

Figure A.17/C-IF3.03

C-IF3.03-02-TS

15

(18) Layer 3 Error ( Message lost in WAC)
WAC

L3-ERRORSN

DISCONNECT
DE-ALLOCATIONDISCONNECT COMPLETE
DE-ALLOCATION COMPLETE

Figure A.18/C-IF3.03(19) Layer 3 Error ( Message lost in SN)
WAC

DISCONNECT

SN

L3-ERROR

DE-ALLOCATIONDISCONNECT COMPLETE
DE-ALLOCATION COMPLETE

Figure A.19/C-IF3.03

16

C-IF3.03-02-TS

(20) Layer 3 Error( Unexpected Message in WAC , V5-state in SN uncompatible)
WAC
MESSAGECONTENTERRORSNMESSAGESTATUS
L3-ERRORMESSAGECONTENTERRORDISCONNECT
DE-ALLOCATIONDISCONNECT COMPLETE
DE-ALLOCATION COMPLETE

Figure A.20/C-IF3.03

C-IF3.03-02-TS

17

(21) Layer 3 Error( Unexpected Message in SN , V5-state in WAC uncompatible)
WAC

SN

MESSAGESTATUS ENQUIRYSTATUS
STATE not ok

DISCONNECT

ERROR

DE-ALLOCATIONDISCONNECT COMPLETE
DE-ALLOCATION COMPLETE

Figure A.21/C-IF3.03

18

C-IF3.03-02-TS

(22) Layer 3 Error( unrecognige B-subscriber or destination )WAC

SN

DIAL TONE
SIGNAL[digit]
UnrecognizeDigit

B-subscriberor destination

Number unobtainable tone
Time out
Busy tone

Time out
Howler tone

SIGNAL[STEADY SIG.ON HOOK]

on hook

DISCONNECT

ERROR

DE-ALLOCATIONDISCONNECT COMPLETE

DE-ALLOCATION COMPLETE

Figure A.22/C-IF3.03

C-IF3.03-02-TS

19

(23) Layer 3 Error( Bearer channel allocation unseccessfully completed before first Tbcc1 expiry)
WAC

SN

ESTABLISH
off hook

ALLOCATION
ALLOC. REJECT

ALLOCATION

Figure A.23/C-IF3.03(24) Layer 3 Error( Bearer channel allocation unseccessfully completed after first Tbcc1 expiry)refer to Figure A.24
WACSN

ESTABLISH
off hook

ALLOCATION

Tbcc1
ALLOCATION

Figure A.24/C-IF3.03

20C-IF3.03-02-TS

expire