The present document specifies service requirements for Combining CS and IMS services using a CS speech or CS multimedia call in association with an IMS session. The IMS session may consist of one or more IMS services.
Requirements for the following capabilities are included:
- Radio capability exchange.
- Terminal capability exchange.
- E.164 number exchange.
- Adding IMS session to an ongoing CS call.
- Adding a CS call to an ongoing IMS session.
- Supplementary services as they relate to CSICS.
It is intended that the capabilities defined herein for CSICS shall support interoperability between different operator networks, and roaming.
- Edition:
- 13.0.0
- Published:
- 01/01/2016
- Number of Pages:
- 16
- File Size:
- 1 file , 130 KB
- Note:
- This product is unavailable in Russia, Ukraine, Belarus
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