SIST EN 301 003-1:2000

• Abstract:

  B-ISDN UNI layer 3 signalling CS2 - step 1 at the UNI

• Status: Published
• Publication Date: 30-Nov-2000
• ICS: 33.080 - Integrated Services Digital Network (ISDN)
• Technical Committee: SPS - Signalling protocols and switching
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2000
• Due Date: 01-Dec-2000
• Completion Date: 01-Dec-2000
• Ref Project: ETSI EN 301 003-1 V1.1.3 (1999-05) - Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber Signalling System No. two (DSS2) protocol; Connection characteristics; Peak cell rate modification by the connection owner; Part 1: Protocol specification [ITU-T Recommendation Q.2963.1 (1996), modified]

SIST EN 301 003-1:2000 is the Slovenian adoption of the ETSI European Standard EN 301 003-1 for Broadband Integrated Services Digital Network (B-ISDN) signalling. It specifies the Digital Subscriber Signalling System No. two (DSS2) protocol for peak cell rate modification by the connection owner at the user-network interface. In practice, it tells equipment and network implementers how an established B-ISDN connection can be modified without breaking the basic call/bearer control already in use.

What does SIST EN 301 003-1:2000 specify?

SIST EN 301 003-1:2000 specifies the signalling protocol for modifying peak cell rate on established B-ISDN calls and connections. It applies at the T reference point, or a coincident S and T reference point, and also covers the T reference point where the service is offered to the user through a private B-ISDN.

The document is organized as a protocol specification, with later parts in the same family covering conformance statements and testing. The foreword identifies the companion parts as follows:

Part	What it covers
Part 2	Protocol Implementation Conformance Statement (PICS) proforma specification
Part 3	Test Suite Structure and Test Purposes (TSS&TP) specification for the user
Part 4	Abstract Test Suite (ATS) and partial PIXIT proforma specification for the user
Part 5	TSS&TP specification for the network
Part 6	ATS and partial PIXIT proforma specification for the network

The scope limits the service to connection-oriented telecommunication services based on single point-to-point calls/connections. It excludes emulated N-ISDN services from request handling and places point-to-multipoint calls/connections outside the scope.

What are the key requirements of SIST EN 301 003-1:2000?

Clause 1 says the service lets the connection owner modify the peak cell rate of an already established connection. That matters because the network must accept controlled traffic changes after setup, instead of forcing a new call.

Clause 1 also ties the service to the DSS2 protocol at the B-ISDN UNI layer 3. That means implementers need the matching basic point-to-point call/bearer protocol from EN 300 443-1 before this modification service can work.

Clause 8 defines the main protocol messages: MODIFY REQUEST, MODIFY ACKNOWLEDGE, MODIFY REJECT, and the confirmation message used after acknowledgement. In practice, these messages carry the request, acceptance, rejection, and completion of the modification exchange.

Clause 9 defines state behavior when a request is rejected or a STATUS message is received. The entity must cancel any reserved resources, restore the earlier policing policy where relevant, stop Timer T360, and return to the active state. This is the part an implementer uses to avoid leaving the connection in an inconsistent traffic state after a failed modification.

Clause 8.1.1 allows one modification request to cover both PCR for CLP = 0 and PCR for CLP = 0 + 1 in the same direction, as long as the resulting values all move in the same direction. That matters for admission control and parameter validation, because mixed increases and decreases are not allowed in that case.

Clause 9.2.5 adds an exceptional procedure for unsupported ATM traffic parameter combinations. If the received parameters are not an allowed combination, the request is rejected with the specified cause for unsupported combinations. This gives clear error handling for invalid traffic profiles.

Clause 11 notes that an interworking unit may act as the responding entity when rejecting a modification request. That is useful where the access path includes translation or interworking equipment rather than a pure B-ISDN node.

What terms does SIST EN 301 003-1:2000 define?

• Broadband Integrated Services Digital Network (B-ISDN) - the broadband network environment for which the protocol is written.
• Digital Subscriber Signalling System No. two (DSS2) - the signalling system used to carry the protocol at the user-network interface.
• Peak cell rate (PCR) - the traffic rate parameter that can be modified for an established connection.
• Connection owner - the party that is allowed to request the peak cell rate modification.
• Emulated N-ISDN services - services that mimic N-ISDN, for which modification requests are not to be used.
• Responding entity - the side that receives, accepts, rejects, or confirms the modification request.
• Transit entity - an intermediate entity that may forward requests and must also restore prior resource settings after rejection.

Who uses SIST EN 301 003-1:2000?

SIST EN 301 003-1:2000 is used by equipment vendors, network operators, and integrators working on B-ISDN access equipment. It is also relevant to test laboratories and conformance engineers, because the standard is part of a larger family that includes PICS, TSS&TP, ATS, and PIXIT material for user and network testing.

Buyers and quality managers use it when they need to check whether a device supports peak cell rate modification at the T reference point or through a private B-ISDN. It is a practical reference for procurement, acceptance testing, and protocol implementation reviews.

What changed in SIST EN 301 003-1:2000 from the previous edition?

This standard is a modified version of ITU-T Recommendation Q.2963.1 (1996). The ETSI/EN text changes the scope, updates references, and adapts protocol behavior for European use.

The stated modifications include:

• a clearer scope for the B-ISDN T reference point and private B-ISDN use
• added references to EN 300 443-1 and EN 301 068-1
• revised text for MODIFY REQUEST, MODIFY ACKNOWLEDGE, MODIFY REJECT, and confirmation handling
• updated STATUS and rejection procedures, including Timer T360 handling
• an exceptional rejection cause for unsupported combinations of ATM traffic parameters

Which standards are used with SIST EN 301 003-1:2000?

• EN 300 443-1 - provides the basic point-to-point call/bearer control protocol that this service depends on.
• EN 301 068-1 - provides ATM transfer capability and traffic parameter indication for related connection characteristics.
• ITU-T Recommendation Q.2963.1 (1996) - the base recommendation modified by this European Standard.
• ITU-T Recommendation I.413 - defines the T reference point and coincident S and T reference point used in the scope.

What does the SIST EN 301 003-1:2000 document contain?

The document contains the protocol specification for peak cell rate modification, not a test suite. Its body covers the service scope, message definitions, state procedures, rejection handling, and exceptional procedures.

It also includes a modified reference structure and detailed behavioral rules for how entities react to MODIFY REQUEST, MODIFY ACKNOWLEDGE, MODIFY REJECT, and STATUS messages. The practical focus is on resource reservation, policing policy reset, and returning to the active state after normal or exceptional outcomes.

For implementers, the most useful content is the state-machine behavior and the message handling rules in Clauses 8, 9, and 11. For testers, it shows what later parts of the family will verify through conformance and abstract test specifications.

SLOVENSKI STANDARD
3SIST EN 301 003-1:
01-december-
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Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber Signalling
System No. two (DSS2) protocol; Connection characteristics; Peak cell rate modification
by the connection owner; Part 1: Protocol specification [ITU-T Recommendation
Q.2963.1 (1996), modified]
Ta slovenski standard je istoveten z: EN 301 003-1 V1.1.3
ICS:
33.080 Digitalno omrežje z Integrated Services Digital
integriranimi storitvami Network (ISDN)
(ISDN)
3SIST EN 301 003-1: en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 301 003-1 V1.1.3 (1999-05)
European Standard (Telecommunications series)
Broadband Integrated Services Digital Network (B-ISDN);
Digital Subscriber Signalling System No. two (DSS2) protocol;
Connection characteristics;
Peak cell rate modification by the connection owner;
Part 1: Protocol specification
[ITU-T Recommendation Q.2963.1 (1996), modified]

2 EN 301 003-1 V1.1.3 (1999-05)
Reference
DEN/SPS-05083-1 (9ac90ie0.PDF)
Keywords
ATM, B-ISDN, broadband, DSS2, ISDN, layer 3,
protocol, UNI
ETSI
Postal address
F-06921 Sophia Antipolis Cedex - FRANCE
Office address
650 Route des Lucioles - Sophia Antipolis
Valbonne - 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
Internet
[e-mail]
Individual copies of this ETSI deliverable
can be downloaded from
http://www.etsi.org
If you find errors in the present document, send your
comment to: [e-mail]
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 1999.
All rights reserved.
ETSI
3 EN 301 003-1 V1.1.3 (1999-05)
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 SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect
of ETSI standards", which is available free of charge from the ETSI Secretariat. Latest updates are available on the
ETSI Web server (http://www.etsi.org/ipr).
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 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 European Standard (Telecommunications series) has been produced by ETSI Technical Committee Signalling
Protocols and Switching (SPS).
The present document is part 1 of a multi-part standard covering the Digital Subscriber Signalling System No. two
(DSS2) protocol specification for the Broadband Integrated Services Digital Network (B-ISDN) peak cell rate
modification by the connection owner, as described below:
Part 1: "Protocol specification [ITU-T Recommendation Q.2963.1 (1996), modified]";
Part 2: "Protocol Implementation Conformance Statement (PICS) proforma specification";
Part 3: "Test Suite Structure and Test Purposes (TSS&TP) specification for the user";
Part 4: "Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT)
proforma specification for the user";
Part 5: "Test Suite Structure and Test Purposes (TSS&TP) specification for the network";
Part 6: "Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT)
proforma specification for the network".
The present document is the initial standard in a family of standards covering the modification of ATM traffic
parameters in B-ISDN connections.
National transposition dates
Date of adoption of this EN: 2 April 1999
Date of latest announcement of this EN (doa): 31 July 1999
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 January 2000
Date of withdrawal of any conflicting National Standard (dow): 31 January 2000
Endorsement notice
The elements of ITU-T Recommendation Q.2963.1 (1996) apply, with the following modifications:
NOTE: New or modified text is indicated using sidebars. In addition, underlining and/or strike-out are used to
highlight detailed modifications where necessary.
ETSI
4 EN 301 003-1 V1.1.3 (1999-05)
Clause 1
Replace clause 1 by:
1 Scope
This first part of EN 301 003 specifies the signalling protocol for peak cell rate modification for the Broadband
Integrated Services Digital Network (B-ISDN) at the T reference point or coincident S and T reference point (as
B B B
defined in ITU-T Recommendation I.413 [1]) by means of the Digital Subscriber Signalling System No. two (DSS2).
In addition, the present document specifies the protocol requirements at the T reference point where the service is
B
provided to the user via a private B-ISDN.
The capability described in the present document enables the connection owner to modify the peak cell rate for
call/connections that have already been established.
Peak cell rate modification is applicable to all connection oriented telecommunication services that are based on single
point-to-point calls/connections, however, modification is not applicable to emulated N-ISDN services. The peak cell
rate modification for point-to-multipoint calls/connections is outside the scope of the present document.
The present document is applicable to equipment, supporting peak cell rate modification, to be attached at either side of
a T reference point or coincident S and T reference point when used as an access to the public B-ISDN.
B B B
Further parts of the present document provide the method of testing and detailed application specific requirements to
determine conformance to the present document.
The provision of this service requires the support of the protocol for the basic point-to-point call/bearer connections as
defined in the EN 300 443-1 [4].
Clause 2, first paragraph
Replace the first paragraph of clause 2 by:
The following documents contain provisions which, through reference in this text, constitute provisions of the present
document.
• References are either specific (identified by date of publication, edition number, version number, etc.) or
non-specific.
•
For a specific reference, subsequent revisions do not apply.
• For a non-specific reference, the la
...

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber Signalling System No. two (DSS2) protocol; Connection characteristics; Peak cell rate modification by the connection owner; Part 1: Protocol specification [ITU-T Recommendation Q.2963.1 (1996), modified]33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)ICS:Ta slovenski standard je istoveten z:EN 301 003-1 Version 1.1.3SIST EN 301 003-1:2000en01-december-2000SIST EN 301 003-1:2000SLOVENSKI
STANDARD
EN 301 003-1 V1.1.3 (1999-05)European Standard (Telecommunications series)Broadband Integrated Services Digital Network (B-ISDN);Digital Subscriber Signalling System No. two (DSS2) protocol;Connection characteristics;Peak cell rate modification by the connection owner;Part 1: Protocol specification[ITU-T Recommendation Q.2963.1 (1996), modified]SIST EN 301 003-1:2000

ETSIEN 301 003-1 V1.1.3 (1999-05)2ReferenceDEN/SPS-05083-1 (9ac90ie0.PDF)KeywordsATM, B-ISDN, broadband, DSS2, ISDN, layer 3,protocol, UNIETSIPostal addressF-06921 Sophia Antipolis Cedex - FRANCEOffice address650 Route des Lucioles - Sophia AntipolisValbonne - FRANCETel.: [phone]
Fax: [phone]Siret N° 348 623 562 00017 - NAF 742 CAssociation à but non lucratif enregistrée à laSous-Préfecture de Grasse (06) N° 7803/[e-mail] copies of this ETSI deliverablecan be downloaded fromhttp://www.etsi.orgIf you find errors in the present document, send yourcomment to: [e-mail] NotificationNo 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 1999.All rights reserved.SIST EN 301 003-1:2000

ETSIEN 301 003-1 V1.1.3 (1999-05)3Intellectual Property RightsIPRs essential or potentially essential to the present document may have been declared to ETSI. The informationpertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be foundin SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respectof ETSI standards", which is available free of charge from the ETSI Secretariat. Latest updates are available on theETSI Web server (http://www.etsi.org/ipr).Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guaranteecan be given as to the existence of other IPRs not referenced in SR 000 314 (or the updates on the ETSI Web server)which are, or may be, or may become, essential to the present document.ForewordThis European Standard (Telecommunications series) has been produced by ETSI Technical Committee SignallingProtocols and Switching (SPS).The present document is part 1 of a multi-part standard covering the Digital Subscriber Signalling System No. two(DSS2) protocol specification for the Broadband Integrated Services Digital Network (B-ISDN) peak cell ratemodification by the connection owner, as described below:Part 1:"Protocol specification [ITU-T Recommendation Q.2963.1 (1996), modified]";Part 2:"Protocol Implementation Conformance Statement (PICS) proforma specification";Part 3:"Test Suite Structure and Test Purposes (TSS&TP) specification for the user";Part 4:"Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT)proforma specification for the user";Part 5:"Test Suite Structure and Test Purposes (TSS&TP) specification for the network";Part 6:"Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT)proforma specification for the network".The present document is the initial standard in a family of standards covering the modification of ATM trafficparameters in B-ISDN connections.National transposition datesDate of adoption of this EN:2 April 1999Date of latest announcement of this EN (doa):31 July 1999Date of latest publication of new National Standardor endorsement of this EN (dop/e):31 January 2000Date of withdrawal of any conflicting National Standard (dow):31 January 2000Endorsement noticeThe elements of ITU-T Recommendation Q.2963.1 (1996) apply, with the following modifications:NOTE:New or modified text is indicated using sidebars. In addition, underlining and/or strike-out are used tohighlight detailed modifications where necessary.SIST EN 301 003-1:2000

ETSIEN 301 003-1 V1.1.3 (1999-05)4Clause 1Replace clause 1 by:1ScopeThis first part of EN 301 003 specifies the signalling protocol for peak cell rate modification for the BroadbandIntegrated Services Digital Network (B-ISDN) at the TB reference point or coincident SB and TB reference point (asdefined in ITU-T Recommendation I.413 [1]) by means of the Digital Subscriber Signalling System No. two (DSS2).In addition, the present document specifies the protocol requirements at the TB reference point where the service isprovided to the user via a private B-ISDN.The capability described in the present document enables the connection owner to modify the peak cell rate forcall/connections that have already been established.Peak cell rate modification is applicable to all connection oriented telecommunication services that are based on singlepoint-to-point calls/connections, however, modification is not applicable to emulated N-ISDN services. The peak cellrate modification for point-to-multipoint calls/connections is outside the scope of the present document.The present document is applicable to equipment, supporting peak cell rate modification, to be attached at either side ofa TB reference point or coincident SB and TB reference point when used as an access to the public B-ISDN.Further parts of the present document provide the method of testing and detailed application specific requirements todetermine conformance to the present document.The provision of this service requires the support of the protocol for the basic point-to-point call/bearer connections asdefined in the EN 300 443-1 [4].Clause 2, first paragraphReplace the first paragraph of clause 2 by:The following documents contain provisions which, through reference in this text, constitute provisions of the presentdocument.· References are either specific (identified by date of publication, edition number, version number, etc.) ornon-specific.· For a specific reference, subsequent revisions do not apply.· For a non-specific reference, the latest version applies.· A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the samenumber.Clau
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