PHS MoU Document
B-SV2.50-01-TS
Title: Public Personal Handy-phone System : Service Specifications ofSubaddress Service
Version: 01
Date: Dec. 17, 1996
PHS MoU Classification: Unrestricted
List of contents:
1.

Definition

2.

Description

3.

Procedures

4.

Network capabilities for charging

5.

Intercommunication considerations

6.

Interaction with other supplementary services

Number of pages: 5

PHS MoU Group
c/o Association of Radio Industries and Businesses (ARIB)
14F, Nittochi Bldg., 4-1, Kasumigaseki 1-choume, Chiyoda-ku, Tokyo 100, Japan
TEL +81-3-5510-8599 FAX +81-3-3592-1103© PHS MoU Group1996

PHS MoU Document
B-SV2.50-01-TS
Version01

History of Revised Versions
DateOutline
17 Dec. 1996

EstablishedB-SV2.50-01-TS
Public Personal Handy-Phone System: Service Specifications of Subaddress ServiceContents
1 Definition ............................................................................................................................ 1
2 Description ........................................................................................................................... 1
3 Procedures ............................................................................................................................ 1
4 Network capabilities for charging........................................................................................ 3
5 Intercommunication considerations ..................................................................................... 3
6 Interaction with other supplementary services..................................................................... 3

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1 Definition
The subaddress supplementary service allows the called (served) user to expand his addressing
capacity beyond the one given by the ISDN number.
2 Description
2.1 General description
A subaddress, if presented by a calling user, is delivered unaffected to the called (served) user. Only
the served user defines the significance of the subaddress. Applications can be for example:(1) to select or to prefer a specific terminal at the called customer’s termination;(2) to invoke a specific process in a terminal at the called customer’s termination.
2.1.1 Size of subaddress
The maximum size of the subaddress is 20 octets.
2.2 Specific terminology
None.
2.3 Applicability to telecommunications services
Subaddress supplementary service is applicable to all telecommunication services.
3 Procedures
3.1 Provision/withdrawal
For calling subscriber, provision shall be without any prior arrangement with the service provider.
For the called subscriber, provision may be general without any prior arrangement or by priorarrangement with the service provider.
Withdrawal is done by the service provider at the subscriber’s request or for administrative reasons.
3.2 Normal Procedures
3.2.1 Activation, deactivation and registrationNot applicable.
Note-Registration may be provided by an appropriate user-terminal procedure(because subaddress is stored within the terminal).
3.2.2 Erasure

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Not applicable.
Note-Erasure may be provided by an appropriate user-terminal procedure(because subaddress is stored within the terminal).
3.2.3 Invocation and operation
Subaddress information can be provided by the calling user in the call set-up phase. The service isinvoked when subaddress information is sent from the network to the called (served) user.
3.2.3.1 Calling user side
During the call set-up phase, the calling user can insert the destination subaddress information whichis then transported transparently by the network from the originating terminal to the destination
terminal.
During the call set-up phase, the calling user can also insert its own subaddress to complement thecalling number identification (see the Calling User Identification Presentation supplementary service).
Note-Delivery of both these pieces of information from the calling user to the network, is part of thebasic call.
3.2.3.2 Called user side
The subaddress that complements the called use’s ISDN number is transferred transparently throughthe network and sent from the destination network to the called user’s terminal(s).
This subaddress information is used by the called user’s terminals in association with the requested
service indications to check the ability to accept the incoming call. In the case where subaddress is notincluded by the calling user, the destination network always provides a normal call offering without
subaddress information to the called user’s terminal (s) (except where other supplementary services
apply).
3.2.4 Interrogation
Not applicable.
3.3 Exceptional procedures
3.3.1 Activation, deactivation and registration
Not applicable.
3.3.2 Erasure
Not applicable.

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3.3.3 Invocation and operation
If provision of the subaddress supplementary service requires a prior arrangement with the service
provider and if the called user has not subscribed to the supplementary service, the network shall not
send a called user’s subaddress with the incoming call request.
When subaddress information is used by the called user’s terminal(s), then if any value without
operational significance is received by the called party, the incoming call can be rejected or ignore.
3.3.4 Interrogation
Not applicable.
4 Network capabilities for charging
Charging principles are outside the scope of this Recommendation.
5 Intercommunication considerations
5.1 Interworking with non-ISDNs or non-PHSs
The subaddress supplementary service need not be applicable if at least one of the two partles is not
an ISDN subscriber or PHS subscriber.
If the subaddress cannot be transmitted to the destination side, no indication shall be sent to thecalling user.
Note-The calling user will be aware of the interworking situation through normal call procedures andby that means will know that the subaddress cannot be transmitted to the destination side.
5.2 Interworking between ISDNs or PHSs
In the case where interworking between ISDNs or PHSs occurs (either public or private), if thesubaddress cannot be transmitted to the destination side due to different network capabilities, thesubaddress shall be discarded and no indication shall be sent to the calling user.
Note- It is expected that this situation will occur only for a limited period of time.
6 Interaction with other supplementary services
6.1 Calling User Identification Presentation (CUIP)
No impact, i.e. neither supplementary service affects the operation of the other supplementary service.
Note-If the called user subscribes to the Calling User Identification Presentation supplementaryservice, the calling party subaddress, if provided by the calling user, and the calling party number arepresented to the called user.

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6.2 Calling User Identification Restriction (CUIR)
No impact, i.e. neither supplementary service affects the operation of the other supplementary service.
6.3 Call Forwarding
6.3.1 Call Forwarding Unconditional (CFU)
The subaddress association with the original called party number shall not be forwarded if the call isforwarded.
6.3.2 Call Forwarding on PS Busy (CFB)
The subaddress associated with the original called party number shall not be forwarded if the call isforwarded.
6.3.3 Call Forwarding on No Reply (CFNRy)
The subaddress associated with the original called party number is delivered the original called party
and shall not be forwarded if the call is forwarded.
6.3.4 Call Forwarding on PS Not Reachable (CFNRc)
The subaddress associated with the original called party number is delivered to the original called
party and shall not be forwarded if the call is deflected.
6.4 Call barring
6.4.1 Barring of All Outgoing Calls (BAOC)
No impact, i.e. neither supplementary service affects the operation of the other supplementary service.
6.4.2 Barring of Outgoing International Calls (BOIC)
No impact, i.e. neither supplementary service affects the operation of the other supplementary service.
6.4.3 Barring of Outgoing International Calls except call to Home Country (BOIC-exHC)
No impact, i.e. neither supplementary service affects the operation of the other supplementary service.
6.4.4 Barring of All Incoming Calls (BAIC)No impact, i.e. neither supplementary service affects the operation of the other supplementary service.
6.4.5 Barring of Incoming Calls on Roaming outside Home Country (BIC-roam)
No impact, i.e. neither supplementary service affects the operation of the other supplementary service.

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6.5 DTMF Transmission
No impact, i.e. neither supplementary service affects the operation of the other supplementary service.
6.6 HandoverNo impact, i.e. neither supplementary service affects the operation of the other supplementary service.
6.7 Subaddress
Not applicable.
6.8 User scrambling
No impact, i.e. neither supplementary service affects the operation of the other supplementary service.

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