Nokia GSM Architecture Training Document

Contents
Introduction
Open interfaces of GSM
	Mobile Station (MS)
Subsystems and network elements in GSM
	Network Switching Subsystem (NSS)
Call control
Charging
Mobility management
Signalling
Subscriber data handling
		Mobile services Switching Centre (MSC)
Call control
Initiation of paging
Charging data collection
		Visitor Location Register (VLR)
		Home Location Register (HLR)
		Authentication Centre (AC)
		Equipment Identity Register (EIR)
	Base Station Subsystem (BSS)
Radio path control
Synchronisation
Air- and A-interface signalling
Connection establishment between the MS and the NSS
Mobility management and speech transcoding
		Base Station Controller (BSC)
Connection establishment between the MS and the NSS
Mobility management
Statistical raw data collection
Air- and A-interface signalling support
BTS and TC control
		Base Transceiver Station (BTS)
Air interface signalling
Ciphering
Speech processing
		TC(SM) ( Transcoder (SubMultiplexer)
	Network Management Subsystem (NMS)
Fault management
Configuration management
Performance management
Network elements and connections – Nokia implemen