Communication system and call establishment methods

Details Communication system and call establishment methods Communication system and call establishment methods

H - Electricity

04

Q

H04Q 7/36 (2006.01) H04Q 7/26 (2006.01) H04Q 7/38 (2006.01) H04Q 7/24 (2006.01)

Patent

CA 2197642

The invention relates to a communication system and call establishment methods. A communication system comprising a cellular mobile communication network, which includes a mobile services switching center (MSC), a base station controller (XBSC) and base stations (BTS), as well as a private branch exchange system (PABX) having at least one base station (PABX_BTS). In the invention, the base station controller of the mobile communication network is provided with an interface to which the extension side of the PABX is coupled. The interface between the base station controller and the PABX is a standard PABX signalling interface towards the extensions. The trunk line side of the PABX is connected e.g. to a PSTN local exchange. The base station (PABX_BTS) under control of the base station controller is placed in that space or building which is the desired location for an office cell of the wireless PABX. Between the base station controller and the base stations there exists a standard signalling interface of the mobile communication network, and the base station of the office cell (10) has a standard interface of the mobile communication network. This concept makes it possible to provide a radio interface of the mobile communication system for a standard PABX of the fixed network.

L'invention se rapporte à un système de communication et à des procédés d'établissement des appels. Le système de communication comprend un réseau mobile cellulaire, qui comprend lui-même un centre de commutation mobile (MSC), un régisseur de station de base (XBSC) et des stations de base (BTS), ainsi qu'un système d'autocommutateur privé (PABX) ayant au moins une station de base (PABX_BTS). Le régisseur de station de base du réseau mobile est doté d'une interface à laquelle est relié le côté poste interne du PABX. L'interface entre le régisseur de station et le PABX est une interface de signalisation de PABX type utilisée avec les postes internes. Le côté ligne inter-urbaine PABX est relié par exemple au commutateur local d'un réseau téléphonique public commuté (RTPC). La station de base (PABX_BTS) qui dépend du régisseur de station de base est placée dans l'espace ou le bâtiment qui constitue l'emplacement souhaité pour une cellule de bureau d'un PABX sans fil. On déploie entre le régisseur de station de base et les stations de base une interface de signalisation type du réseau mobile, et la station de base de la cellule de bureau (10) a une interface type du réseau mobile. Cette configuration permet d'assurer une interface radio-électrique du système mobile pour un PABX type du réseau fixe.

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