This document defines the stage 2 description for the bearer independent CS core network. The stage 2 shall
cover the information flow between the GMSC server, MSC server and media gateways. Note that nothing in the
present document shall preclude an implementation of a combined MSC Server and MGW.
This TS shall show the CS core network termination of the Iu interface in order to cover the information flow stimulus to the core network and describe the interaction with the supplementary and value added services and capabilities.
For the purposes of the present document, the protocol used over the Nc
interface is an enhanced call control protocol
supporting call bearer separation such as BICC (which is specified in TS 29.205
The protocol used over the Mc
interface is H.248 (which is specified in TS 29.232
SIP-I based CS core network is further specified in TS 23.231
Local Call Local Switch (LCLS) functionality is further specified in TS 23.284
This TS is applicable only for ATM or IP transport in the CS core network.