Adapter for secure voip communications

H - Electricity – 04 – M

Patent

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Details

H04M 7/00 (2006.01) H04L 29/06 (2006.01) H04M 3/42 (2006.01)

Patent

CA 2546743

Method and adapter apparatus(200,250) for securing information exchanged between a calling party(102) and a called party(14). A first signal is generated, which is representative of an analog probe signal. The first signal is released towards the called party(14). Responsive to receipt from the called party of a second signal responsive to the analog probe signal and indicative of an ability of the called party to participate in a secure information exchange, negotiations are performed with the called party to securely exchange subsequent information with the called party. In this way, the adapter apparatus (200,250) can securely exchange information without prior knowledge of whether the called party is secure-capable or secure- incapable and without prior knowledge of whether the called party is a POTS phone or a packet-switched device.

L'invention concerne un adaptateur et un procédé visant à sécuriser des informations échangées entre un abonné appelant et un abonné appelé. Un premier signal est généré, ledit signal représentant un signal de sonde analogique. Ce premier signal est acheminé vers l'abonné appelé. En réponse à la réception d'un deuxième signal envoyé par l'abonné appelé, répondant au signal de sonde analogique et indiquant la capacité de l'abonné appelé à participer à un échange d'informations sécurisé, des négociations sont effectuées avec l'abonné appelé, de sorte à échanger ultérieurement des informations avec ledit abonné appelé en toute sécurité. L'adaptateur selon l'invention permet ainsi d'échanger des informations en toute sécurité, sans qu'il soit nécessaire de savoir à l'avance si l'abonné appelé dispose ou non d'une capacité de sécurisation, ni si l'abonné appelé a un service téléphonique ordinaire ou un dispositif de commutation par paquets.

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