Canonical Atlas record

TR 25.921

Guidelines and principles for protocol description and error handling

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Responsible WGRP

StatusUnder change control

Initial releaseRel-4

Selected releaseRel-99

Latest indexed version7.0.0

Series25

TypeTR

Release evolution

Compare evidence between releases

Use indexed version, Work Item and Change Request evidence to see what changed around this specification. This is an evidence trail, not a clause-by-clause normative diff.

Release ledger

Version · WI · CR evidence by release

Rel-44.8.00 WI23 CRs · 21 approved

Rel-55.5.01 WI10 CRs · 8 approved

Rel-66.1.01 WI1 CR · 1 approved

Rel-77.0.00 WI0 CRs

R99no version indexed1 WI31 CRs · 30 approved

Release 19993.11.00 WI0 CRs

Rel-99 snapshot

Work affecting this release

0 indexed Change Requests · 1 connected Work Item.

Showing 12 CR records from the available cross-release sample. Browse release CR records (JSON) →

CR 0001 rev.2 — Further clarifications on specialised encoding

CR 0003 rev.1 — Modification of the 'presence' column specification in tabular format, and other editorial modifications

CR 0005 — Editorial corrections on section 11.2

CR 0006 — Improvement of integers and enumerated, and introduction of reals and octet strings

CR 0007 — Extension rules for supporting future releases

CR 0008 — Description of backward compatibility consideration rule for RANAP, SABP, RNSAP and NBAP ASN.1

CR 0009 — Usage of the Version column

CR 0010 rev.1 — Clean-up

CR 0011 — Recommendations on the use of the extension mechanism

CR 0014 — Clean up

CR 0016 — Usage of spare values in future releases

CR 0018 rev.1 — Structure and naming of extensions in ASN.1

Version history

Indexed versions

Showing 33 of 33 indexed versions.

7.0.0Rel-7SA#362007-07-25

6.1.0Rel-6RAN#292005-10-14

6.0.0Rel-6RAN#262004-12-21

5.5.0Rel-5RAN#242004-06-17

4.8.0Rel-4RAN#242004-06-17

3.11.0Release 1999RAN#242004-06-17

5.4.0Rel-5RAN#232004-03-26

4.7.0Rel-4RAN#232004-03-26

3.10.0Release 1999RAN#232004-03-26

5.3.0Rel-5RAN#222004-01-12

5.2.0Rel-5RAN#212003-10-02

4.6.0Rel-4RAN#212003-10-02

3.9.0Release 1999RAN#212003-10-02

5.1.0Rel-5RAN-#182003-01-13

4.5.0Rel-4RAN-#182003-01-13

3.8.0Release 1999RAN-#182003-01-13

5.0.0Rel-5RAN-#152002-03-19

4.4.0Rel-4RAN-#152002-03-19

3.7.0Release 1999RAN-#152002-03-19

4.3.0Rel-4RAN-#142002-01-04

3.6.0Release 1999RAN-#142002-01-04

4.2.0Rel-4RAN-#132001-10-02

3.5.0Release 1999RAN-#132001-10-02

4.1.0Rel-4RAN-#122001-06-19

3.4.0Release 1999RAN-#122001-06-19

4.0.0Rel-4RAN-#112001-03-27

3.3.0Release 1999RAN-#112001-03-27

3.2.0Release 1999RAN-#102000-12-20

3.1.0Release 1999RAN-#72000-03-15

3.0.0Release 1999RAN-#61999-12-12

1.3.0Release 1999RAN-#51999-10-13

1.0.0Release 1999RAN-#31999-04-23

0.0.0Release 1999-1999-02-04

Atlas classifications

Meaning and provenance

No Atlas classifications have been attached yet.

Work Items

Standards work connected to TR 25.921

TEI5

(Small) Technical Enhancements and Improvements for Rel-5

Rel-5parsed

TEI6

(Small) Technical Enhancements and Improvements for Rel-6

Rel-6parsed

TEI

(Small) Technical Enhancements and Improvements for R99

R99parsed

Knowledge graph

Related standards

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