Method and apparatus for detecting a secondary destination...

H - Electricity – 04 – M

Patent

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H04M 3/00 (2006.01) H04B 3/23 (2006.01) H04M 1/82 (2006.01) H04M 3/38 (2006.01) H04M 3/56 (2006.01) H04M 3/58 (2006.01) H04M 3/54 (2006.01)

Patent

CA 2291678

A method and apparatus for detecting whether a remote party has added a secondary telephone destination to a telephone call, for example through the activation of three-way calling service, conference calling or two lining bridging, by identifying an echo characteristic to the telephone connection between the local and the remote telephone and monitoring the echo characteristic to determine whether there is a significant change. The addition of a secondary telephone destination can be verified by continuing to monitor the echo characteristic to determine whether it has returned to its original value.

On décrit un procédé et un appareil permettant de détecter si un correspondant éloigné a ajouté une destination téléphonique secondaire à un appel téléphonique, par exemple par l'activation d'un service de conférence à trois, de conférence téléphonique ou de création d'une passerelle entre deux lignes. L'appareil identifie une caractéristique d'écho associée à la connexion téléphonique entre le téléphone local et le téléphone éloigné et surveille la caractéristique d'écho pour déterminer s'il se produit un changement significatif. L'ajout d'une destination téléphonique secondaire peut être vérifié au moyen de la poursuite de la surveillance de la caractéristique d'écho pour déterminer si elle est revenue à sa valeur de départ.

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