PROCEDURE FOR PROVIDING A PSTN-MAPPING IN A TELECOMMUNICATION SYSTEM

摘要

Procedure for accomplishing PSTN-mapping in a telecommunication system comprising a telephone exchange (LE) with a number of subscribers defined in it, a first access node (AN1), which is connected to the telephone exchange via a first V5 interface (V5), a second access node (AN2), which is connected to the first access node (AN1) via a second V5 interface (V5'), and terminal equipment (TE) connected to the second access node (AN2), the connection between the subscriber and the telephone exchange (LE) being set up by cascading the two V5 interfaces. The signalling sequences and message decoding in PSTN-mapping are exclusively taken care of by the telephone exchange (LE) and the second access node (AN2), and the signalling is transmitted transparently through the first access node (AN1) without the first access node participating in the decoding of the signalling.