ETSI TS 124 065
Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); General Packet Radio Service (GPRS); Mobile Station (MS) - Serving GPRS Support Node (SGSN); Subnetwork Dependent Convergence Protocol (SNDCP) (3G TS 24.065 version 3.1.0 Release 1999)
standard by European Telecommunications Standards Institute , 01/01/2000
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About This Item
Full Description
The user of the services provided by SNDCP is a packet data protocol (PDP) at the mobile Station (MS) or the Relay at the Serving GPRS Support Node (SGSN). Additionally, a control entity, e.g., AT command interpreter, may be an SNDCP user. SNDCP uses the services provided by the Logical Link Control (LLC) layer and the Session Management (SM) sub-layer. The main functions of SNDCP are: -Multiplexing of several PDPs. -Compression / decompression of user data. -Compression / decompression of protocol control information. -Segmentation of a network protocol data unit (N-PDU) into Logical Link Control Protocol Data Units (LL-PDUs) and re-assembly of LL-PDUs into a N-PDU. GSM 04.65 is applicable to GPRS MS and SGSN.
