METHOD FOR STATUS INQUIRY OF AT LEAST ONE CONNECTION FOR A USER GROUP AND/OR COMMUNICATION TRANSMISSION DEVICE

摘要

The invention relates to a status inquiry in a communication network (PSTN) from a particular communication transmission device (VPG1), arranged as a switchboard and connected to a first exchange (VST1), for the purpose of establishing a connection to at least one connection and/or communication device (TLN2,..., TLN4) of a user group (CXGRP), by means of at least one second exchange (VST2). Said inquiry is directed from the first exchange to at least the second exchange, by means of a signalling path (ZK).