TS Latest: Rel-19 Services Multi-Gen

TS 24.642 – CCBS/CCNR/CCNL SIP Protocol Specification

3GPP TS 24.642 is the 3GPP Technical Specification for CCBS/CCNR/CCNL SIP Protocol Specification. It is published in 12 releases (Rel-8 to Rel-19); the latest version is 19.0.0 in Rel-19.

Stage 3 protocol for CCBS, CCNR, and CCNL services in IMS using SIP/SDP. Enables automatic call completion when busy, no reply, or not logged-in conditions resolve.

Read TS 24.642 →

Document type
Technical Specification
Latest release
Rel-19
Latest version
19.0.0
Series
Category
Services
Network layer
Services
Technology
Multi-Gen

Releases and versions of TS 24.642

ReleaseLatest versionLinks
Rel-19 19.0.0 Read · Download (3GPP)
Rel-18 18.0.0 Read · Download (3GPP)
Rel-17 17.0.0 Read · Download (3GPP)
Rel-16 16.0.0 Read · Download (3GPP)
Rel-15 15.0.0 Read · Download (3GPP)
Rel-14 14.0.0 Read · Download (3GPP)
Rel-13 13.0.0 Read · Download (3GPP)
Rel-12 12.0.0 Read · Download (3GPP)
Rel-11 11.4.0 Read · Download (3GPP)
Rel-10 10.7.0 Read · Download (3GPP)
Rel-9 9.10.0 Read · Download (3GPP)
Rel-8 8.11.0 Read · Download (3GPP)

Scope of TS 24.642

Category: Services (IMS). Technology generation: Multi-Gen. Network layer: Services.

Who should read this specification?

Implementation notes

Complexity level: Intermediate. Implementation difficulty: Medium.

Key technologies

IMSSIPSDP

Specifications referenced by TS 24.642

Specifications that reference TS 24.642

Other specifications in the 24 series

Related glossary terms

CCBSCNRCCNRCCNLISDNSSCNSIPIMSUEN/AXCAP

Related topics

IMS & Voice (VoLTE, VoNR)5G NR (New Radio)Services & Applications

Frequently asked questions

What is 3GPP TS 24.642?

3GPP TS 24.642 is the 3GPP Technical Specification for CCBS/CCNR/CCNL SIP Protocol Specification. Stage 3 protocol for CCBS, CCNR, and CCNL services in IMS using SIP/SDP. Enables automatic call completion when busy, no reply, or not logged-in conditions resolve.

Which 3GPP releases include TS 24.642?

TS 24.642 is published in 12 releases, from Rel-8 to Rel-19. The latest version on 3GPP Explorer is 19.0.0 (Rel-19).

What category does TS 24.642 belong to?

TS 24.642 belongs to the Services (IMS) category of 3GPP specifications. It applies to Multi-Gen networks.

View the full specification with interactive table of contents, version history, and AI analysis.

Read Full Specification →