Backup SIP server for the survivability of an enterprise network using SIP

US9201743B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9201743-B2
Application numberUS-201214000714-A
CountryUS
Kind codeB2
Filing dateJan 24, 2012
Priority dateMar 15, 2011
Publication dateDec 1, 2015
Grant dateDec 1, 2015

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Abstract

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This backup SIP server (BSS) comprises: means (LMM) for detecting whether an Internet protocol link is not working, and enabling the use of a backup SIP signaling link to the main site via a SIP gateway and a public telephone network when the Internet protocol link is not working; means for transferring SIP signaling information on this backup link; means for, when receiving a registration request from a terminal of the remote site while the Internet protocol link is not working, registering this terminal locally and forwarding the registration request to the main site via the backup link; means (PQM) for storing policies defining what services, supplied by the main SIP server, are compatible with said backup SIP signaling link, and for altering the content of at least one field in each SIP signaling message addressed to the main SIP server before transferring this SIP signaling message on the backup link, this content being altered according to said policies.

First claim

Opening claim text (preview).

There is claimed: 1. A backup SIP server for an uninterruptible connection of an enterprise network using a session initiation protocol (SIP), the enterprise network including a main site and at least one remote site, the main site including a main SIP server and the remote site including said backup SIP server, the main and remote sites exchanging SIP signaling messages via an Internet protocol link through an Internet protocol network, the backup SIP server comprising: means for…

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What does patent US9201743B2 cover?
This backup SIP server (BSS) comprises: means (LMM) for detecting whether an Internet protocol link is not working, and enabling the use of a backup SIP signaling link to the main site via a SIP gateway and a public telephone network when the Internet protocol link is not working; means for transferring SIP signaling information on this backup link; means for, when receiving a regi…
Who is the assignee on this patent?
Brunel Sebastien, Barbero Laurent, Alcatel Lucent
What technology area does this patent fall under?
Primary CPC classification H04M3/42314. Mapped technology areas include Electricity.
When was this patent published?
Publication date Tue Dec 01 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).