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T-Lib-Initiated Hold-Retrieve RFC 3264

Description

Some SIP endpoints do not accept SDP with an IP address of 0.0.0.0. SIP Server behaves differently if the Sip-hold-rfc3264 configuration parameter is set to true. A valid SDP is sent in the Invite, but as per the RFC, the attribute flag of the SDP is changed to get the desired functionality.

For example, to hold a call, an SDP with a=inactive is sent in the SDP. A re-INVITE with the original SDP retrieves the call.

Diagram

SIP Endpoint SDK T-Lib-Initiated Hold-Retrieve RFC 3264.jpg

This page was last edited on January 23, 2014, at 23:05.

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