SIP transfer in a back-to-back user agent (B2BUA) environment

US8938545B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-8938545-B2
Application numberUS-201213485604-A
CountryUS
Kind codeB2
Filing dateMay 31, 2012
Priority dateDec 30, 2011
Publication dateJan 20, 2015
Grant dateJan 20, 2015

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Abstract

Official abstract text for this publication.

The system generates a change in the SIP INVITE message during a call transfer. Here, a user relation element involved in the call can change the header information in the message to include the endpoint view of the transferring party. Thus, the INVITE message is redirected to the transferring party's user relation element, which can interpret the received message and “unravel” the B2BUAs in the existing call path. The system includes changes in the user relation element to effect the message change and interpret the message once received. Changes to the user relation element forgo the need to change the communication endpoints.

First claim

Opening claim text (preview).

What is claimed is: 1. A method for facilitating a transfer of a User Agent (UA) involved in a first communication session to a different communication session, the method comprising: receiving, by a processor, a first message comprising a unique identifier inserted into at least one portion of the first message, the at least one portion comprising at least one of a header and a parameter of the first message, the first message having traversed at least one Back-to-Back UA (B2BUA)…

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What does patent US8938545B2 cover?
The system generates a change in the SIP INVITE message during a call transfer. Here, a user relation element involved in the call can change the header information in the message to include the endpoint view of the transferring party. Thus, the INVITE message is redirected to the transferring party's user relation element, which can interpret the received message and “unravel” the B2BUAs in th…
Who is the assignee on this patent?
Ezell Joel, Brunson Gordon R, Ravipati Chandra Mouli, and 2 more
What technology area does this patent fall under?
Primary CPC classification H04L65/1016. Mapped technology areas include Electricity.
When was this patent published?
Publication date Tue Jan 20 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).