C.24 Definition of feature-capability indicator g.3gpp.cs2ps-drvcc-alerting

24.2373GPPIP Multimedia (IM) Core Network (CN) subsystem IP Multimedia Subsystem (IMS) service continuityRelease 17Stage 3TS

Feature-capability indicator name: g.3gpp.cs2ps-drvcc-alerting

The g.3gpp.cs2ps-drvcc-alerting feature-capability indicator shall be registered in the IANA Proxy-Feature Feature-Capability Indicator Trees registry "Global Feature-Capability Indicator Registration Tree" sub-registry.

Summary of the feature indicated by this feature-capability indicator:

This feature-capability indicator, when included in a Feature-Caps header field as specified in IETF RFC 6809 [60] in a SIP request or a SIP response to the SIP request, indicates support of CS to PS dual radio access transfer for calls in alerting phase.

Feature-capability indicator specification reference:

3GPP TS 24.237, http://www.3gpp.org/ftp/Specs/archive/24_series/24.237/

Values appropriate for use with this feature-capability indicator: None.

Examples of typical use: Indicating the support of CS to PS dual radio access transfer for calls in alerting phase in the SIP INVITE request and SIP response to the SIP INVITE request.

Security Considerations: Security considerations for this feature-capability indicator are discussed in clause 9 of IETF RFC 6809 [60].