TR 23.972
Circuit Switched Multimedia Telephony
V3.0.0 (PDF)
2000/03 18 p.
- Rapporteur:
- Mr. Monrad, Atle
full Table of Contents for TR 23.972 Word version: 3.0.0
1 Scope p. 4
This document collects the requirements and working assumptions for multimedia for release 99. The description is at a level of detail, which is required in the detailed procedure design in N1 and N3.
The target release for the Multimedia specifications is (in general) R99, and the specifications apply to UMTS as well as GSM.
2 References p. 4
3 Multimedia call setup p. 5
3.1 Requirements p. 5
3.2 Indication and Coding of 3G-324M during Setup p. 6
3.3 Mobile to Mobile Call p. 7
3.4 Mobile to/from PSTN call p. 8
3.4.1 MO case p. 8
3.4.2 MT Case p. 8
3.5 Mobile to/from ISDN call p. 10
3.5.1 MO case p. 10
3.5.2 MT case p. 11
3.6 Fallback from 3.1 kHz to speech p. 12
3.7 Call retry p. 12
4 Supplementary services p. 12
5 Multimedia work plan, Specification changes p. 13
6 Open issues p. 13
6.1 In-call modification p. 14
6.1.1 Modification of call type - Speech first, swap to H.324 p. 14
6.1.1.1 Outband Approach p. 14
6.1.1.2 Inband Approach p. 14
6.1.2 NW initiated call modification p. 14
6.1.2.1 Service degradation p. 14
6.1.2.2 Upgrading service p. 15
6.2 UDI/RDI fallback to speech p. 15
6.3 UDI/RDI fallback to 3.1 kHz p. 15
6.4 H.223 Rate Adaption p. 16
$ Change history p. 17
