Invention Grant
US08750291B2 Enhanced call preservation techniques for SIP-based communication networks
有权
用于基于SIP的通信网络的增强呼叫保留技术
- Patent Title: Enhanced call preservation techniques for SIP-based communication networks
- Patent Title (中): 用于基于SIP的通信网络的增强呼叫保留技术
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Application No.: US12623430Application Date: 2009-11-22
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Publication No.: US08750291B2Publication Date: 2014-06-10
- Inventor: Mehmet C. Balasaygun , Gordon R. Brunson , Harsh V. Mendiratta
- Applicant: Mehmet C. Balasaygun , Gordon R. Brunson , Harsh V. Mendiratta
- Applicant Address: US NJ Basking Ridge
- Assignee: Avaya Inc.
- Current Assignee: Avaya Inc.
- Current Assignee Address: US NJ Basking Ridge
- Agency: Sheridan Ross P.C.
- Main IPC: H04L12/66
- IPC: H04L12/66 ; H04M15/00 ; H04L29/06 ; H04W28/04 ; H04M7/00 ; H04W72/04 ; H04W76/04

Abstract:
Methods, devices, and systems are provided for preserving connections, especially in a SIP environment. More specifically, the connection preservation techniques presented in this document enhance the RFC 4028-based session refresh approach in order to provide media connection preservation for calls that experience end-to-end signaling loss or refresh failures. Specifically, participants on a call can continue to exchange media despite the loss of control at the SIP signaling plane.
Public/Granted literature
- US20110122863A1 ENHANCED CALL PRESERVATION TECHNIQUES FOR SIP-BASED COMMUNICATION NETWORKS Public/Granted day:2011-05-26
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