This TS is an introduction to the TS 48.0xx 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 TS 48.020
series, dealing with the support of data services on this interface.
This TS gives an overview of the content of the TS 48.0xx and TS 48.020
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.