ETSI ES 283 049 V2.1.1 (2009-02)

Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); H.248 Profile for controlling Trunking Media Gateways (TMG) [Endorsement of 3GPP TS 29.332 (V7), modified]

RES/TISPAN-03197-NGN-R2

Zlite telekomunikacijske in internetne storitve ter protokoli za napredno omreženje (TISPAN) - Profil H.248 za krmiljenje prenosniških medijskih prehodov (TMG)

General Information

• Status: Published
• Publication Date: 22-Feb-2009
• Technical Committee: TISPAN 3 - TISPAN Protocols
• Current Stage: 12 - Completion
• Due Date: 06-Mar-2009
• Completion Date: 23-Feb-2009
• Ref Project: SIST ES 283 049 V2.1.1:2009 - Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN) - H.248 Profile for controlling Trunking Media Gateways (TMG)

Standards Content (Sample)

ETSI ES 283 049 V2.1.1 (2009-02)
ETSI Standard

Telecommunications and Internet converged Services and
Protocols for Advanced Networking (TISPAN);
H.248 Profile for controlling
Trunking Media Gateways (TMG)
[Endorsement of 3GPP TS 29.332 (V7), modified]

---------------------- Page: 1 ----------------------
2 ETSI ES 283 049 V2.1.1 (2009-02)




Reference
RES/TISPAN-03197-NGN-R2
Keywords
endorsement, gateway, H.248, trunking
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
Individual copies of the present document can be downloaded from:
http://www.etsi.org
The present document may be made available in more than one electronic version or in print. In any case of existing or
perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF).
In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive
within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
http://portal.etsi.org/chaircor/ETSI_support.asp
Copyright Notification
No part may be reproduced except as authorized by written permission.
The copyright and the foregoing restriction extend to reproduction in all media.

© European Telecommunications Standards Institute 2009.
All rights reserved.

TM TM TM TM
DECT , PLUGTESTS , UMTS , TIPHON , the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered
for the benefit of its Members.
TM
3GPP is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners.
LTE™ is a Trade Mark of ETSI currently being registered
for the benefit of its Members and of the 3GPP Organizational Partners.
GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI

---------------------- Page: 2 ----------------------
3 ETSI ES 283 049 V2.1.1 (2009-02)

Contents
Intellectual Property Rights . 4
Foreword . 4
1 Scope . 5
2 References . 5
2.1 Normative references . 5
2.2 Informative references . 5
Endorsement notice . 6
Global modifications to 3GPP TS 29.332 . 6
Annex ZA (informative): Comparison with ES 283 024 (H.248 TGW Profile for TISPAN R1) . 10
Annex A (informative): Change history . 11
History . 12

ETSI

---------------------- Page: 3 ----------------------
4 ETSI ES 283 049 V2.1.1 (2009-02)

Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://webapp.etsi.org/IPR/home.asp).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This ETSI Standard (ES) has been produced by ETSI Technical Committee Telecommunications and Internet
converged Services and Protocols for Advanced Networking (TISPAN).
ETSI

---------------------- Page: 4 ----------------------
5 ETSI ES 283 049 V2.1.1 (2009-02)

1 Scope
The present document provides the ETSI TISPAN endorsement of the 3GPP TS 29.332 [1] "3rd Generation Partnership
Project; Technical Specification Group Core Network and Terminals; Media Gateway Control Function (MGCF) - IM
Media Gateway; Mn Interface (Release 7)".
The present document provides the necessary adaptations to the above specification, in order to comply with the
requirements of TISPAN NGN Release 2.
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• Non-specific reference may be made only to a complete document or a part thereof and only in the following
cases:
- if it is accepted that it will be possible to use all future changes of the referenced document for the
purposes of the referring document;
- for informative references.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
their long term validity.
2.1 Normative references
The following referenced documents are indispensable for the application of the present document. For dated
references, only the edition cited applies. For non-specific references, the latest edition of the referenced document
(including any amendments) applies.
[1] 3GPP TS 29.332: "3rd Generation Partnership Project; Technical Specification Group Core
Network and Terminals; Media Gateway Control Function (MGCF) - IM Media Gateway;
Mn Interface (Release 7)".
2.2 Informative references
The following referenced documents are not essential to the use of the present document but they assist the user with
regard to a particular subject area. For non-specific references, the latest version of the referenced document (including
any amendments) applies.
[i.1] ETSI ES 283 024: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); H.248 Profile for controlling Trunking Media Gateways;
Protocol specification".
ETSI

---------------------- Page: 5 ----------------------
6 ETSI ES 283 049 V2.1.1 (2009-02)

Endorsement notice
The present document endorses 3GPP TS 29.332 "Media Gateway Control Function (MGCF) - IM Media Gateway;
Mn Interface (Release 7) [1], the contents of which apply together with the addition of the modifications being covered
herein.
Global modifications to 3GPP TS 29.332
NOTE: When making modifications to the endorsed document's original text [1], strikethrough text means
deleted text and underlined text means inserted text. If there has been underlined text in the endorsed
document's original text [1], the underlining has been removed for the sake of clarity.
Throughout the text of 3GPP TS 29.332
2 References
The references in clause 2 of [1] should be replaced as shown in table 1.
ETSI

---------------------- Page: 6 ----------------------
7 ETSI ES 283 049 V2.1.1 (2009-02)

Table 1
Reference in 3GPP TS 29.332 [1] Replaced reference
[1] 3GPP TS 23.228: "IP Multimedia Subsystem (IMS); ETSI TS 182 006: "Telecommunications and Internet
Stage 2". converged Services and Protocols for Advanced
Networking (TISPAN); IP Multimedia Subsystem (IMS);
Stage 2 description (3GPP TS 23.228 V7.2.0, modified)".
[2] 3GPP TS 29.007: "General requirements on ETSI TS 129 007: "Digital cellular telecommunications
interworking between the Public Land Mobile Network system (Phase 2+); Universal Mobile Telecommunications
(PLMN) and the Integrated Services Digital Network System (UMTS); General requirements on interworking
(ISDN) or Public Switched Telephone Network (PSTN)". between the Public Land Mobile Network (PLMN) and the
Integrated Services Digital Network (ISDN) or Public
Switched Telephone Network (PSTN) (3GPP TS 29.007
Release 7)".
[3] 3GPP TS 29.205: "Application of Q.1900 series to ETSI TS 129 205: "Universal Mobile Telecommunications
Bearer Independent CS Network architecture; Stage 3". System (UMTS); Application of Q.1900 series to bearer-
independent Circuit Switched (CS) core network
architecture; Stage 3 (3GPP TS 29.205 Release 7)".
[4] 3GPP TS 29.163: "Interworking
...

Final draft ETSI ES 283 049 V2.1.0 (2008-12)
ETSI Standard

Telecommunications and Internet converged Services and
Protocols for Advanced Networking (TISPAN);
H.248 Profile for controlling
Trunking Media Gateways (TMG)
[Endorsement of 3GPP TS 29.332 (V7), modified]

---------------------- Page: 1 ----------------------
2 Final draft ETSI ES 283 049 V2.1.0 (2008-12)




Reference
RES/TISPAN-03197-NGN-R2
Keywords
endorsement, gateway, H.248, trunking
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
Individual copies of the present document can be downloaded from:
http://www.etsi.org
The present document may be made available in more than one electronic version or in print. In any case of existing or
perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF).
In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive
within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
http://portal.etsi.org/chaircor/ETSI_support.asp
Copyright Notification
Reproduction is only permitted for the purpose of standardization work undertaken within ETSI.
The copyright and the foregoing restrictions extend to reproduction in all media.

© European Telecommunications Standards Institute 2008.
All rights reserved.

TM TM TM TM
DECT , PLUGTESTS , UMTS , TIPHON , the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered
for the benefit of its Members.
TM
3GPP is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners.
ETSI

---------------------- Page: 2 ----------------------
3 Final draft ETSI ES 283 049 V2.1.0 (2008-12)

Contents
Intellectual Property Rights . 4
Foreword . 4
1 Scope . 5
2 References . 5
2.1 Normative references . 5
2.2 Informative references . 5
Endorsement notice . 6
Global modifications to 3GPP TS 29.332 . 6
Annex ZA (informative): Comparison with ES 283 024 (H.248 TGW Profile for TISPAN R1) . 10
Annex A (informative): Change history . 11
History . 12

ETSI

---------------------- Page: 3 ----------------------
4 Final draft ETSI ES 283 049 V2.1.0 (2008-12)

Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://webapp.etsi.org/IPR/home.asp).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This ETSI Standard (ES) has been produced by ETSI Technical Committee Telecommunications and Internet
converged Services and Protocols for Advanced Networking (TISPAN), and is now submitted for the ETSI standards
Membership Approval Procedure.
ETSI

---------------------- Page: 4 ----------------------
5 Final draft ETSI ES 283 049 V2.1.0 (2008-12)

1 Scope
The present document provides the ETSI TISPAN endorsement of the 3GPP TS 29.332 [1] "3rd Generation Partnership
Project; Technical Specification Group Core Network and Terminals; Media Gateway Control Function (MGCF) - IM
Media Gateway; Mn Interface (Release 7)".
The present document provides the necessary adaptations to the above specification, in order to comply with the
requirements of TISPAN NGN Release 2.
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• Non-specific reference may be made only to a complete document or a part thereof and only in the following
cases:
- if it is accepted that it will be possible to use all future changes of the referenced document for the
purposes of the referring document;
- for informative references.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
For online referenced documents, information sufficient to identify and locate the source shall be provided. Preferably,
the primary source of the referenced document should be cited, in order to ensure traceability. Furthermore, the
reference should, as far as possible, remain valid for the expected life of the document. The reference shall include the
method of access to the referenced document and the full network address, with the same punctuation and use of upper
case and lower case letters.
NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
their long term validity.
2.1 Normative references
The following referenced documents are indispensable for the application of the present document. For dated
references, only the edition cited applies. For non-specific references, the latest edition of the referenced document
(including any amendments) applies.
[1] 3GPP TS 29.332: "3rd Generation Partnership Project; Technical Specification Group Core
Network and Terminals; Media Gateway Control Function (MGCF) - IM Media Gateway;
Mn Interface (Release 7)".
2.2 Informative references
The following referenced documents are not essential to the use of the present document but they assist the user with
regard to a particular subject area. For non-specific references, the latest version of the referenced document (including
any amendments) applies.
[i.1] ETSI ES 283 024: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); H.248 Profile for controlling Trunking Media Gateways;
Protocol specification".
ETSI

---------------------- Page: 5 ----------------------
6 Final draft ETSI ES 283 049 V2.1.0 (2008-12)

Endorsement notice
The present document endorses 3GPP TS 29.332 "Media Gateway Control Function (MGCF) - IM Media Gateway;
Mn Interface (Release 7) [1], the contents of which apply together with the addition of the modifications being covered
herein.
Global modifications to 3GPP TS 29.332
NOTE: When making modifications to the endorsed document's original text [1], strikethrough text means
deleted text and underlined text means inserted text. If there has been underlined text in the endorsed
document's original text [1], the underlining has been removed for the sake of clarity.
Throughout the text of 3GPP TS 29.332
2 References
The references in clause 2 of [1] should be replaced as shown in table 1.
ETSI

---------------------- Page: 6 ----------------------
7 Final draft ETSI ES 283 049 V2.1.0 (2008-12)

Table 1
Reference in 3GPP TS 29.332 [1] Replaced reference
[1] 3GPP TS 23.228: "IP Multimedia Subsystem (IMS); ETSI TS 182 006: "Telecommunications and Internet
Stage 2". converged Services and Protocols for Advanced
Networking (TISPAN); IP Multimedia Subsystem (IMS);
Stage 2 description (3GPP TS 23.228 V7.2.0, modified)".
[2] 3GPP TS 29.007: "General requirements on ETSI TS 129 007: "Digital cellular telecommunications
interworking between the Public Land Mobile Network system (Phase 2+); Universal Mobile Telecommunications
(PLMN) and the Integrated Services Digital Network System (UMTS); General requirements on interworking
(ISDN) or Public Switched Telephone Network (PSTN)". between the Public Land Mobile Network (PLMN) and the
Integrated Services Digital Network (ISDN) or Public
Switched Telephone Network (PSTN) (3GPP TS 29.007
Release 7)".
[3] 3GPP TS 29.205: "Application of Q.1900 series to ETSI TS 129 205: "Universal Mobile Telecommunications
Bearer Independen
...

SLOVENSKI STANDARD
SIST ES 283 049 V2.1.1:2009
01-maj-2009
Zlite telekomunikacijske in internetne storitve ter protokoli za napredno omreženje
(TISPAN) - Profil H.248 za krmiljenje prenosniških medijskih prehodov (TMG)
Telecommunications and Internet converged Services and Protocols for Advanced
Networking (TISPAN) - H.248 Profile for controlling Trunking Media Gateways (TMG)
Ta slovenski standard je istoveten z: ES 283 049 Version 2.1.1
ICS:
33.040.01 Telekomunikacijski sistemi Telecommunication systems
na splošno in general
33.080 Digitalno omrežje z Integrated Services Digital
integriranimi storitvami Network (ISDN)
(ISDN)
SIST ES 283 049 V2.1.1:2009 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST ES 283 049 V2.1.1:2009

---------------------- Page: 2 ----------------------

SIST ES 283 049 V2.1.1:2009

ETSI ES 283 049 V2.1.1 (2009-02)
ETSI Standard

Telecommunications and Internet converged Services and
Protocols for Advanced Networking (TISPAN);
H.248 Profile for controlling
Trunking Media Gateways (TMG)
[Endorsement of 3GPP TS 29.332 (V7), modified]

---------------------- Page: 3 ----------------------

SIST ES 283 049 V2.1.1:2009
 2 ETSI ES 283 049 V2.1.1 (2009-02)




Reference
RES/TISPAN-03197-NGN-R2
Keywords
endorsement, gateway, H.248, trunking
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
Individual copies of the present document can be downloaded from:
http://www.etsi.org
The present document may be made available in more than one electronic version or in print. In any case of existing or
perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF).
In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive
within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
http://portal.etsi.org/chaircor/ETSI_support.asp
Copyright Notification
No part may be reproduced except as authorized by written permission.
The copyright and the foregoing restriction extend to reproduction in all media.

© European Telecommunications Standards Institute 2009.
All rights reserved.

TM TM TM TM
DECT , PLUGTESTS , UMTS , TIPHON , the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered
for the benefit of its Members.
TM
3GPP is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners.
LTE™ is a Trade Mark of ETSI currently being registered
for the benefit of its Members and of the 3GPP Organizational Partners.
GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI

---------------------- Page: 4 ----------------------

SIST ES 283 049 V2.1.1:2009
 3 ETSI ES 283 049 V2.1.1 (2009-02)

Contents
Intellectual Property Rights . 4
Foreword . 4
1 Scope . 5
2 References . 5
2.1 Normative references . 5
2.2 Informative references . 5
Endorsement notice . 6
Global modifications to 3GPP TS 29.332 . 6
Annex ZA (informative): Comparison with ES 283 024 (H.248 TGW Profile for TISPAN R1) . 10
Annex A (informative): Change history . 11
History . 12

ETSI

---------------------- Page: 5 ----------------------

SIST ES 283 049 V2.1.1:2009
 4 ETSI ES 283 049 V2.1.1 (2009-02)

Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://webapp.etsi.org/IPR/home.asp).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This ETSI Standard (ES) has been produced by ETSI Technical Committee Telecommunications and Internet
converged Services and Protocols for Advanced Networking (TISPAN).
ETSI

---------------------- Page: 6 ----------------------

SIST ES 283 049 V2.1.1:2009
 5 ETSI ES 283 049 V2.1.1 (2009-02)

1 Scope
The present document provides the ETSI TISPAN endorsement of the 3GPP TS 29.332 [1] "3rd Generation Partnership
Project; Technical Specification Group Core Network and Terminals; Media Gateway Control Function (MGCF) - IM
Media Gateway; Mn Interface (Release 7)".
The present document provides the necessary adaptations to the above specification, in order to comply with the
requirements of TISPAN NGN Release 2.
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• Non-specific reference may be made only to a complete document or a part thereof and only in the following
cases:
- if it is accepted that it will be possible to use all future changes of the referenced document for the
purposes of the referring document;
- for informative references.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
their long term validity.
2.1 Normative references
The following referenced documents are indispensable for the application of the present document. For dated
references, only the edition cited applies. For non-specific references, the latest edition of the referenced document
(including any amendments) applies.
[1] 3GPP TS 29.332: "3rd Generation Partnership Project; Technical Specification Group Core
Network and Terminals; Media Gateway Control Function (MGCF) - IM Media Gateway;
Mn Interface (Release 7)".
2.2 Informative references
The following referenced documents are not essential to the use of the present document but they assist the user with
regard to a particular subject area. For non-specific references, the latest version of the referenced document (including
any amendments) applies.
[i.1] ETSI ES 283 024: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); H.248 Profile for controlling Trunking Media Gateways;
Protocol specification".
ETSI

---------------------- Page: 7 ----------------------

SIST ES 283 049 V2.1.1:2009
 6 ETSI ES 283 049 V2.1.1 (2009-02)

Endorsement notice
The present document endorses 3GPP TS 29.332 "Media Gateway Control Function (MGCF) - IM Media Gateway;
Mn Interface (Release 7) [1], the contents of which apply together with the addition of the modifications being covered
herein.
Global modifications to 3GPP TS 29.332
NOTE: When making modifications to the endorsed document's original text [1], strikethrough text means
deleted text and underlined text means inserted text. If there has been underlined text in the endorsed
document's original text [1], the underlining has been removed for the sake of clarity.
Throughout the text of 3GPP TS 29.332
2 References
The references in clause 2 of [1] should be replaced as shown in table 1.
ETSI

---------------------- Page: 8 ----------------------

SIST ES 283 049 V2.1.1:2009
 7 ETSI ES 283 049 V2.1.1 (2009-02)

Table 1
Reference in 3GPP TS 29.332 [1] Replaced reference
[1] 3GPP TS 23.228: "IP Multimedia Subsystem (IMS); ETSI TS 182 006: "Telecommunications and Internet
Stage 2". converged Services and Protocols for Advanced
Networking (TISPAN); IP Multimedia Subsystem (IMS);
Stage 2 description (3GPP TS 23.228 V7.2.0, modified)".
[2] 3GPP TS 29.007: "General requirements on ETSI TS 129 007: "Digital cellular telecommunications
interworking between the Public Land Mobile Network system (Phase 2+); Universal Mobile Telecommunications
(PLMN) and the Integrated Services Digital Network System (UMTS); General requirements on interworking
(ISDN) or Public Switched Telephone Network (PSTN)". between the Public Land Mobile Ne
...