Universal Mobile Telecommunications System (UMTS); Application of Q.1900 series to bearer independent Circuit Switched (CS) core network architecture; Stage 3 (V14.0.0; 3GPP TS 29.205 version 14.0.0 Release 14)
"The present document describes the protocols to be used when ITU-T Q.1902 ""Bearer Independent Call Control"" is used as call control protocol in a 3GPP Bearer Independent CS core network 3GPP TS 23.205 [1] The Q.1902 operates between (G)MSC servers .The BICC architecture as described in ITU-T Q.1902 [6]-[10] consists of a number of protocols. The following types of protocols are described: call control protocol@ bearer control protocols and a resource control protocol for this architecture. The architecture complies with the requirements imposed by 3GPP TS 23.205 [1] and TS 23.153 [2]. The present document is valid for a 3rd generation PLMN (UMTS) complying with Release 4 and later. Note: Q.1902 can be used in other network architectures than the one defined in 3GPP TS 23.205 [1]"