scope:

This European Telecommunication Standard (ETS) describes the stage two of the Cordless Terminal Mobility (CTM) call handling services for Private Telecommunication Networks (PTNs). It comprises two related but distinct service descriptions, CTM Incoming Call Handling Additional Network Feature (AN FCTM I) and CTM Outgoing Call Handling Additional Network Feature (AN F- CTMO).

AN F- CTMI directs incoming calls to a CTM user within a PTN regardless of the CTM user's geographical location within the PTN, provided the CTM user's location is known.

AN F-CTMO detects an outgoing call o r request for a supplementary service from a CTM user and establishes it as a basic call or signalling connection, respectively, regardless of the user's geographical location within the PTN. It also provides the CTM user's service profile for use by outgoing call control, o r alternatively passes the call to the CTM user's home location for processing.

These AN Fs is applicable to all circuit-mode basic services as defined in ETS 300 17 1 [ 1].

AN F specificat ions are produced in three stages according to the method specified in ENV 41005 [4]. This ETS contains the stage 2 specifications of ANF-CTMI and AN F- CTMO. It identifies the functional entities involved in the feature and the information flows between them. The speCification of information flows between the PTN and cordless terminals is beyond the scope of this ETS.

The purpose of the stage 2 specification is to guide and constrain the work on signalling protocols at stage 3, while fulfilling the requirements of stage 1. Stage 1 and stage 3 are defined in separate standards.

Conformance to this ETS is met by conforming to a stage 3 standard which fulfils the requirements of this ETS that are relevant to the equipment for which the stage 3 standard applies. Therefore, no method of testing is provided for this ETS.