Procedure for determining register recall filtering times in a telecommunication system in conjunction with a v5 interface

Abstract

Procedure for determining register recall filtering time in a telecommunication system in conjunction with a V interface in different national mappings. The telecommunication system comprises a local exchange (LE); an access node (AN), which is provided with means responsible for the register recall function; a V interface (V ) connecting the access node to the local exchange; a number of subscriber-line interface plug-in units (PIU) disposed in the local exchange (LE) and/or in the access node (AN) and comprising storage means in which the setting parameters associated with the register recall filtering time are set; and a number of analogue subscribers (Z), whose subscriber lines are connected via subscriber-line interface plug-in units (PIU) to the access node (AN) and/or directly to the local exchange (LE), and in which system a blackout of predetermined duration is generated in the subscriber line to allow register recall, the duration of said blackout corresponding to the value defined by the national subscriber-line interface mapping. In the procedure, the setting mode regarding the register recall filtering time is defined in the access node (AN) by means of an access node specific parameter; and, based on this parameter, a setting message defining setting times for the register recall filtering times is sent to the subscriber-line interface plug-in unit (PIU).