Lifeline telephony provision for voice over digital...

Details Lifeline telephony provision for voice over digital... Lifeline telephony provision for voice over digital...

H - Electricity

04

M

H04M 11/06 (2006.01) H04L 12/66 (2006.01) H04Q 3/64 (2006.01) H04Q 11/04 (2006.01)

Patent

CA 2382060

A method apparatus, and software for providing lifeline service during power failure affecting Customer Premises Equipment (CPE) in a Digital Subscriber Loop (DSL) arranged to carry voice traffic in band rather than on a separate analogue POTS band. The arrangement provides a reduced service, capable of supporting at least one voice call, to operate during such power failure and, where a single call is in progress during power failure, that call may be maintained during the transition from DSL to analogue POTS lifeline service. Where a call is in progress upon power restoration, the lifeline POTS service may be maintained until completion of the call so as not to interrupt a potential lifeline call.

On décrit un procédé, un appareil et un logiciel qui assurent un service de secours lors de pannes de courant affectant l'équipement privé d'abonné (EPA) faisant partie d'une ligne d'abonné numérique (LDAN), le système étant prévu pour acheminer le trafic vocal dans la bande plutôt que sur une bande séparée de service téléphonique traditionnel analogique (STTA). Le système assure un service réduit qui est capable de supporter au moins une communication vocale, afin d'opérer lors de pannes de courant, la communication pouvant être maintenue pendant la transition entre le service LDAN et le service de secours STTA. Lorsqu'un appel est en cours d'établissement au moment de la remise en service du courant, le service STTA de secours peut être maintenu jusqu'à la fin de la communication afin de ne pas interrompre une communication qui peut être un appel d'urgence.

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