PHS MoU Document
B-IF3.34-02-TS
Title: Public Personal Handy-phone System : Network-Network Interface for Call Control
Signalling System No.7 - ISDN User Part Signalling Procedures

Version: 02
Date: May 15, 1998
PHS MoU Classification: Unrestricted
List of contents:<Summary>
1. Relation with International Standards
2. Differences from ITU-T Recommendation Q.764
3. Reference
4. Item for Further Study<text>
1.

GeneralAnnex a ISUP procedures for a call originated by/terminated to a public PS

Number of pages: 5PHS 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 Group1998

PHS MoU Document
B-IF3.34-02-TS
VersionHistory of Revised Versions
DateOutline

01

02

EstablishedMay 15,1998

B-IF3.34-02-TS

Public Personal Handy-Phone System:
Network - Network Interface for Call Control
Signalling System No. 7ISDN User Part Signalling Procedures

Contents
1 General .................................................................................................................................1
Annex a ......................................................................................................................................2

B-IF3.34-02-TS

LB-IF3.34-02-TS
Public Personal Handy-Phone System:
Network - Network Interface for Call Control
Signalling System No. 7ISDN User Part Signalling Procedures<Summary>

1. Relation with International Standards
This specification conforms to ITU-T Recommendation Q.764 in principle and specifies new protocol
elements and procedures to provide PHS roaming basic service.
2. Differences from ITU-T Recommendation Q.764
In case of §Roaming number assignment method No.1¨, it is recommended to use §Generic Number(additional called number) parameter¨ in IAM defined in ITU-T Recommendation Q.762 and Q.763(white book version) for transferring §PHS number¨ which identify the public PS. However, some
network may transfer §PHS number¨, using the other parameter which is defined as domestic or regional specification.
In case of §Roaming number assignment method No.2¨ , §Generic Number parameter¨ or other specific parameter in order to transfer §PHS number¨ is not required. The differences between this specification and ITU-T Q.764 are summarized in the Table 1/B-IF3.34.
In this specification, it is recommended to use Generic Number(additional called number) parameterin IAM defined in ITU-T Recommendation Q.762 and Q.763(white book version) for transferring
PHS number which identify the public PS. However, some network may transfer PHS number, using
the other parameter which is defined as domestic or regional specifications.
Table 1/B-IF3.34
Differences between the specification and ITU-T Q.764
Item
Annex aISUP procedures for a calloriginated by/terminated to apublic PS

DifferenceThis Annex is added in thisspecification.

Reasons
To provide ISUP procedures fora call originated by/terminated to a public PS

3. References
ITU-T Recommendation Q.764
PHS MoU Specification B-IF3.30, B-IF3.31, B-IF3.32, B-IF3.33, B-IF3.36, B-IF3.37
4. Items for Further Study
Following items are recognized to be under study:a) roaming basic service using §Redirection method,¨

B-IF3.34-02-TS (1)b) Interaction with other supplementary services which use ©generic number (additional callednumber) parameter.ª(2) B-IF3.34-02-TS

B-IF3.34-02-TS
Public Personal Handy-Phone System:
Network - Network Interface for Call Control
Signalling System No. 7ISDN User Part Signalling Procedures

1. General
This specification conforms to ITU-T Recommendation Q.764 in principle. See ITU-T Recommendation Q.764 with additional specification described in Annex a.

B-IF3.34-02-TS 1

Annex a
ISUP procedures for a call originated by/terminated to a public PS
1. Introduction
There are two types of routing methods to terminate a call to a public PS in roaming. One is toconnect the call to a visited network after the call is once connected to a home network (through homenetwork method), and the other is, if it is allowed by the network structure, to request redirection froma home network to any previous network and then connect the call to a visited network from theredirection network in use (redirection method). This part shows the conditions for internetwork callconnection under through home network method.
2. Through Home Network Method
2.1 Conditions for Interconnection
Figure a-1/B-IF3.34 shows the conditions for connection by the through home network method toterminate a call to a public PS in roaming under the basic PHS roaming capability set.
2.2 Routing Method
2.2.1 Roaming number assignment method No.1
Figure a-1/B-IF3.34 shows the routing method to a public PS in roaming. In this figure, the transit
network used for routing from an originating network to a home network is called transit network A,
and that used for routing from a home network to a visited network is called transit network B. In
some cases, transit network A and transit network B may coincide.

Or igin at in g
n et wor k

Tr a n sit
n et wor k A(1)

Ter min a t in g
P H S n u mber

SDF (H)Ser viceP r ofile

Ter min a t in g
P H S n u mber

SDF (Vn ew)
Hom en et wor k

P HSr oa min g
n u m ber(2)

Tr a n sit
n et wor k B

Visit edn et wor k(3)Ser viceP r ofile

Ter min a t in gP H S n u mber

P H S r oa min g n u mber+t er m in a t in g P HS n u m ber

Figure a-1/B-IF3.34 Terminating a Call to a Public PSin Roaming by Through Home Network Method(1)When a call should be terminated by a public PS in roaming, the originating network and transit
network A connect the call to the home network based on the terminating PHS number.

2 B-IF3.34-02-TS

(2)The home network refers to the PHS roaming service profile for the terminating PHS number ofSDF(H), obtains the PHS roaming number that contains the information addressing the visited
network, and then the home network and transit network B route the call to the visited network
based on the PHS roaming number.
(3)It should be referred by the visited network to the PHS roaming service profile for the terminating
PHS number of SDF(Vnew) copied from the home network through shadowing, and the call isoffered to an area where the public PS visits.
Table a-2/B-IF3.34 shows the ISUP parameters which are required for the through home network
method. The parameters are contained in IAM (Initial Address Message).
In this subclause, it is recommended to use generic number(additional called number) parameter in
IAM defined in ITU-T Recommendation Q.762 and Q.763(White Book version) for transferring PHSnumber which identify the public PS. However, some network may transfer PHS number using theother parameter which is defined as domestic or regional specifications.

Table a-2/B-IF3.34 Usage of ISUP Parameters(through home network method)
1) From originating network to home network
Parameters
Applications
Called party number
Contains terminating PHS number
2) From home network to visited network
Parameters
Applications
Called party number
Contains PHS roaming number
Contains terminating PHS number
Generic number(additional called number)or the other parameter
which is defined as
domestic or regional
specifications
When the generic number(additional called number) parameter or the other parameter which is defined
as domestic or regional specifications is contained in IAM, the home network should select the transit
network B such that a generic number(additional called number) parameter or the other parameter
conforming the domestic or regional specification can be transferred.
2.2.2 Roaming number assignment method No.2
Figure a-3/B-IF3.34 shows the routing method to a public PS in roaming. In this figure, the transit network
used for routing from an originating network to a home network is called transit network A, and that used
for routing from a home network to a visited network is called transit network B. In some cases, transit
network A and transit network B may coincide.

B-IF3.34-02-TS 3

Or igin at in g
n et wor k

Tr a n sitn et wor k A

SDF (H)Ser viceP r ofile

Ter min a t in g
P H S n u mber

(1)

Ter min a t in g
P H S n u mber

Requ est / P HS r oa min g n u m ber
Hom en et wor k

P HSr oa min gn u m ber

Tr a n sitn et wor k B

SDF (Vn ew)

Visit edn et wor k(2)

Ser viceP r ofile(3)P H S r oa min g n u mber

P H S r oa min g n u mber

Figure a-3/B-IF3.34 Terminating a Call to a Public PSin Roaming by Through Home Network Method
õìô When a call should be terminated by a public PS in roaming, the originating network and transit
network A connect the call to the home network based on the terminating PHS number.
õëô The home network sends request to visited network in order to get the PHS roaming number that
contains information addressing the visited network, and then the home network and transit network B
route the call to visited network based on the PHS roaming number.
õêô It should be referred by the visited network to the PHS roaming service profile copied from the homenetwork through shadowing, and the call is offered to an area where the public PS visits.

Table a-4/B-IF3.34 shows the ISUP parameters which are required for the through home network method.

Table a-4/B-IF3.34 Usage of ISUP Parameters(through home network method)
1) From originating network to home network
Parameters
Applications
Called party number
Contains terminating PHS number2) From home network to visited network
Parameters
Applications
Called party number
Contains PHS roaming number
The PHS roaming number must be the one which is capable of routing tovisited network and identifying the public PS in YLVLWHGýQHWZRUNï4 B-IF3.34-02-TS

Table a-1/B-IF3.34 Conditions for Connection in Consideration of Basic PHS Roaming Capability Set (Through Home Network Method)
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