Digital Cellular Telecommunications System (Phase 2+); Base Station System - Mobile-Services Switching Centre (BSS - MSC) Interface; General Aspects (GSM 08.01 Version 7.0.0 Release 1998)
The present document is an introduction to the GSM OS.OX series of Technical Specifications and deals with the definition of the base station system (BSS) to mobile switching centre (MSC) (referred to as the A-interface) defined for the GSM system. It also introduces Technical Specifications in the GSM OS.20 series@ dealing with the support of data services on this interface. The present document gives an overview of the content of the GSM OS.OX and GSM OS.20 series of Technical Specifications explaining how the detailed content of the Technical Specifications is partitioned and how the Technical Specifications can be used to support a full BSS-MSC interface.