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 Portable Part (PP) interworking requirements and Fixed Part (FP) interworking requirements/mappings necessary to ensure that the GSM bearer services can be provided over DECT, as specified in ETS 300 466 [13]. To enable DECT terminals to interwork with DECT systems which are connected to the GSM infrastructure, from the DECT side this ETS is based on the DECT/GSM interworking profile, access and mappings ETS 300 370 [10], as well as the DECT data services profile, generic data link service, service type C, Class 2, ETS 300 651 [24].

NOTE: For information, the DECT data service profile is based upon the GAP ETS 300 444 [12] and on the DECT common interface specification ETS 300 175 [1] - [8].

Interworking functions/mappings are specified for Mobile Switching Centre (MSC) attachment for the DECT 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 this ETS. The complete interface used between the DECT FP and the GSM Mobile Switching Centre (MSC) is specified in ETS 300 499 [14]. Attachment via other interfaces to GSM-networks is outside the scope of this ETS.

The DECT access protocols and FP and PP interworking/mappings necessary for the support of basic voice telephony service are specified in ETS 300 370 [10].