scope:

This European Telecommunication Standard (ETS) is a part of the Digital Enhanced Cordless Telecommunications / Global System for Mobile Communications (DECT/GSM) Interworking Profile (IWP) and specifies the interface used between the Digital European Cordless Telecommunications (DECT) Fixed Part (FP) and the Global System for Mobile communications (GSM) Mobile Switching Centre (MSC). This ETS specifies the exceptions to theGSM 08.0X series of Technical Specifications (TSs) [1] to [5] and only places requirements on the DECT FP.

For the purposes of Call Control (CC) and Mobility Management (MM), most messages are not interpreted, but relayed to the underlying DECT radio sub-system. Some messages may however be interpreted and handled at the interconnection. The DECT access protocols and a particular set of FP interworking functions/mappings to ensure that the GSM services can be provided over DECT are specified in ETS 300 370 [6] and ETS 300 466 [7].

The DECT sub-system uses the A-interface in the respect that the FP emulates a GSM Base Station Controller (BSC). This ETS covers the handling of procedures that are applicable on the A-interface in order to ensure an appropriate GSM BSC emulation. It also covers error conditions at the interface, handling of timers and handling of message headers that are required for the correct addressing of messages.

Interworking between the DECT FP and the GSM MSC via other interfaces is outside the scope of this ETS.