Method, switching means and telecommunication system for...

G - Physics – 10 – L

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G10L 19/00 (2006.01) H04L 12/28 (2006.01) H04L 29/06 (2006.01) H04Q 7/36 (2006.01)

Patent

CA 2314263

A switching means (BSC/MSG/VLR) of a mobile radio communication network (PLMN) contains a subscriber type determining means (SSTDM) which determines on the basis of call set-up messages whether in particular the second subscriber station (WS) of an IP-network (INTRANET) is capable of performing an audio data encoding/decoding, in particular a GSM speech encoding/decoding. The subscriber station type determining means (SSTDM) switches off an audio data encoding/decoding means (CODEC) in a base station controller (BSC) if the second subscriber station (WS) is capable of performing the speech encoding/decoding. Thus, a deterioration of the speech quality due to performing unnecessary audio data encoding/decoding is avoided and the bandwidth in the PLMN/data network can be utilized more efficiently.

L'invention concerne un dispositif de commutation (BSC/MSC/VLR) d'un réseau de communication radio mobile (PLMN) contenant un dispositif de détermination de type d'abonné (SSTDM) qui détermine, sur la base de messages d'établissement de communications, si en particulier la deuxième station d'abonné (WS) d'un réseau IP (INTRANET) est capable de réaliser un codage/décodage de données audio, notamment un codage/décodage de son vocal en GSM. Le dispositif de détermination de type de station d'abonné (SSTDM) déconnecte un dispositif de codage/décodage de données audio (CODEC) dans une commande de station de base (BSC) si la deuxième station d'abonné (WS) est capable de réaliser le codage/décodage de son vocal. Ainsi, on évite une détérioration de la qualité du son vocal due à un codage/décodage superflu de données audio et on peut utiliser plus efficacement la largeur de bande du réseau de données/PLMN.

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