ÖNORM EN 300466 V 1.2.1

The present document is a part of the Digital European Cordless Telecommunications/Global System for Mobile Communications (DECT/GSM) interworking profile and specifies requirements needed to ensure that GSM basic services can be provided over the DECT air interface. To enable DECT terminals to inter-work with DECT systems which are connected to the GSM infrastructure, the present document specifies the additions to the GAP specification, EN 300 444 [12] on which this profile is based. The additions are based on the DECT Common Interface specification given in EN 300 175-1 [2] to EN 300 175-8 [9]. From the GSM side the present document assumes interworking with GSM Public Land Mobile Network (PLMN) phase 2. Interworking with GSM Phase 1 is outside the scope of the present document. Interworking requirements are based upon Mobile Switching Centre (MSC) attachment for the DECT Fixed Part (FP) as the FP is using the A-interface towards the GSM MSC in the respect that the FP emulates a GSM Base Station Controller (BSC) with regards to the GSM messages which are relevant to the present document. The complete interface used between the DECT FP and the GSM MSC is specified in ETS 300 499 [13]. Attachment via other interfaces to GSM-networks is outside the scope of the present document. The DECT access protocols and FP and Portable Part (PP) interworking/mappings necessary for the support of basic voice telephony service are specified in EN 300 370 [11]. The interworking/mappings and access requirements for the support of other services of the present document, will be included in future standards of the DECT/GSM interworking profile. The whole set of GSM services according to GSM Phase 2 is supported unless it is explicitly stated in the following clauses of the present document. The DECT PP has to accept the GSM Subscriber Identification Module (SIM) as well as the DECT Authentication Module (DAM), with (...abbreviated)