System and method for transmitting call information in a...

Details System and method for transmitting call information in a... System and method for transmitting call information in a...

H - Electricity

04

W

H04W 4/06 (2009.01)

Patent

CA 2679483

A system and method for transmitting call information in a communication system having sites with long link delays. Upon a call being initiated within the communication system, a zone controller determines the participating sites that are to be involved in the call and assigns an IP multicast group address for the call. The zone controller also determines whether any of the participating sites have a long link delay. If any of the participating sites do have a long link delay, the zone controller also assigns an IP unicast address for each such site. The call information is then transmitted both on the IP multicast address as well as on each assigned IP unicast address to ensure that the call is received by each participating site without the loss of call information.

L'invention concerne un système et un procédé de transmission d'informations d'appel dans un système de communication dont certains des sites ont de longs retards de liaison. Lorsqu'un appel est initié dans le système de communication, un dispositif de commande de zone détermine les sites participants à impliquer dans l'appel et attribue une adresse de groupe de multidiffusion IP pour l'appel. Le dispositif de commande de zone détermine également si l'un quelconque des sites participants a un long retard de liaison. Si c'est le cas, le dispositif de commande de zone attribue également une adresse de diffusion individuelle IP pour chacun de ces sites. Les informations d'appel sont ensuite transmises à la fois sur l'adresse de multidiffusion IP et sur chaque adresse de diffusion individuelle IP attribuée, pour garantir que l'appel est reçu par chaque site participant sans perte d'informations d'appel.

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