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SIP PRACK is configured in the SIP SGP object as displayed below. For information on configuring the SIP Signaling and associated functionality, refer to the Configure SIP (Single SIP IP) topic.
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PRACK Support
There is a drop down menu with the following selections. PRACK is disabled by Default.
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An invalid SDP message will be ignored by the IMG 2020.
The IMG 2020 will accept a valid PRACK message which has invalid SDP information embedded. It will discard only the SDP portion of the PRACK message. (Media parameters will not change.)
The IMG 2020 does not support sending out a PRACK message with the SDP information embedded. It will only send out a PRACK message without the SDP information embedded.
Call Flows
Refer to the SIP PRACK Call Flows topic for call flow information
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