Nokia Corporation

Nokia Networks Oy

Nokia Network Oy

Pekka Korhonen

Toivo Lallukka

Seppo Kuorelahti

Martti Yrj&auml;n&auml;

Reijo Romppanen

Martti Yrjana

Arto Tihonen

Kari Haapalehto

Mika Pelkonen

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).

Procedure for determining register recall filtering times in a telecommunication system in conjunction with a V5 interface

Method for concentrating subscribers in a local exchange (LE), which comprises an exchange terminal ( ), a V5 interface (V5) connected to the exchange terminal, a group switch ( ) and an interconnecting line ( ) between the exchange terminal and the group switch for connecting subscribers connected to the exchange terminal to the group switch. According to the invention, a number of V5 interfaces (V5) are connected to the exchange terminal ( ) and the exchange terminal is connected to the group switch ( ) via the interconnecting line ( ), thus forming between the exchange terminal and the group switch an internal interface within the local exchange for concentrating V5 subscribers.

Method for concentrating subscribers in a local exchange

A procedure for concentrating subscribers in a telephone network comprising a local exchange (LE) provided with a first exchange terminal (1), a remote subscriber stage (RSS) provided with a second exchange terminal (2), a V5 interface (V5) connected to the second exchange terminal, and an interconnecting feeder (3) between the first and second exchange terminals through which subscribers connected via the V5 interface to the second exchange terminal are connected to the local exchange. According to the invention, a number of V5 interfaces (V5) are connected to the second exchange terminals (2) and the second exchange terminal is connected via the interconnecting feeder (3) to the first exchange terminal (1), thus forming a concentrating interface between the first and second exchange terminals.

Method for concentrating subscribers in a telephone network

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Oulu, Finland

Pekka Korhonen