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ETSI TS 123 284
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ETSI TS 123 284 Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Local Call Local Switch (LCLS); Stage 2 (3GPP TS 23.284 version 14.0.0 Release 14)
standard by European Telecommunications Standards Institute, 04/01/2017
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Full Description
ETSI TS 123 284 defines the Stage 2 description for the Local Call Local Switch feature. Local Call Local Switch may be implemented in both BICC based CS core networks as defined in 3GPP TS 23.205 [2] and SIP-I based CS core networks as defined in 3GPP TS 23.231 [3], with a GSM/EDGE Radio Access Network supporting either TDM based or IP based A interface.This stage 2 shall cover the information flows between the GMSC server, MSC server and media gateways that are required to support Local Call Local Switching highlighting the specific requirements in addition to those defined for BICC based CS core networks 3GPP TS 23.205 [2] and SIP-I based CS core networks 3GPP TS 23.231 [3]. Note that nothing in the present document shall preclude an implementation of a combined MSC Server and MGW. The present document shall show the CS core network termination of the A interface, and the information flows between the BSS and the MSC server, 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.
The present document specifies functions, procedures and information which apply to GERAN Iu mode. However, functionality related to GERAN Iu mode is neither maintained nor enhanced.