Nortel Networks Corporation

Mo R Zonoun

Lyndon Y Ong

Francois Audet

A method and system to provide voice over a network includes transmitting and receiving sides. On the transmitting side, a service message is created for a supplementary service using a signaling protocol over a network. The service message is encapsulated in a session message according to a session initiation protocol using a mail format. The mail format has a content type. The session message with the encapsulated service message is transmitted over the network. On the receiving side, a session message is received having a service message over a network. The service message is created for a supplementary service using a signaling protocol. The service message is encapsulated in the session message according to a session initiation protocol using a mail format. The mail format has a content type corresponding to the signaling protocol. The session message is parsed to retrieve the service message. The retrieved service message is processed to control the supplementary service.

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Sunnyvale, CA, United States of America

Mo R Zonoun