The present document specifies the principles of interworking between the 3GPP IM CN subsystem and BICC/ISUP based legacy CS networks, in order to support IM basic voice, data and multimedia calls....
This document covers the architectural requirements for 3GPP systems based on UTRAN, E-UTRAN and Iu mode GERAN. In particular it details the high level requirements for the Circuit Switched (CS)...
The present document investigates how the OSA Mobility Interface Class methods defined in 3GPP TS 29.198-6 [5] can be mapped onto IMS ISC Interface (SIP) operations. The mapping of the OSA API to the...
The present document describes the protocol to be used on the Media Gateway Control Function (MGCF) – IM Media Gateway (IM-MGW) interface. This interface provides the Media Gateway Control for...
The present document defines the USIM application for 3GPP telecom network operation. The present document specifies: - specific command parameters; - file structures; - contents of Efs (Elementary...