Atm network providing transparently narrowband based...

H - Electricity – 04 – L

Patent

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Details

H04L 12/64 (2006.01) H04L 12/56 (2006.01) H04L 12/66 (2006.01)

Patent

CA 2275433

Narrowband based telephony services and associated value added services are provided transparently in a network providing ATM switching and no STM switching is required in an ATM network (625) to which units (601, 603) requiring such services are connected. This is obtained by means of, when a call enters the ATM network (625), first finding the output port (619) from the ATM network (625), then returning the address of that port to the entry port (617) and thereafter ATM switch the connection directly through the ATM network (625). Hereby bandwidth resources are more efficiently used since all switching is done by ATM regardless of application. Heavy investments in providing intelligent services support by existing systems can be reused in an efficient way and thus reduce time to market for the introduction of the value added services.

Selon l'invention, des services téléphoniques en bande étroite et des services à valeur ajoutée associés sont assurés de façon transparente dans un réseau à commutation ATM sans qu'il y ait besoin de fonctionnalités STM dans le réseau ATM (625) auquel se connectent des unités (601, 603) demandant de tels services. Ce procédé consiste à rechercher le port de sortie (619) du réseau ATM (625) lorsqu'un appel arrive dans ce réseau ATM (625) puis à renvoyer l'adresse du port de sortie au port d'entrée (617). Ensuite ATM commute la connexion directement via le réseau ATM (625). Les ressources largeur de bande sont ainsi utilisées plus efficacement, toutes les commutations étant effectuées en ATM quelle que soit l'application. Cela permet une meilleure utilisation des lourds investissements effectués pour permettre aux systèmes existants d'assurer les services intelligents, et par conséquent de réduire le temps de commercialisation de nouveaux services à valeur ajoutée.

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