IMS Centralized Services (ICS) enable the delivery of IM CN subsystem based multimedia telephony and
supplementary services as defined in TS 24.173
to users regardless of the attached access network type; e.g. CS domain access or IP-CAN.
This TS specifies the principles of interworking between the IM CN subsystem and CS domain in order
to enable ICS for UEs using CS domain access.
full Table of Contents for TS 29.292 Word version: 15.5.0