IMG 1010 - SIP PRACK Call Flows
- Kelli Higdon
Owned by Kelli Higdon
Changes to Basic Call Flow with PRACK enabled
The call flow on the left highlights the changes when PRACK is enabled, as compared to the call flow on the right without PRACK enabled.
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UAS Honors UAC’s Preference
This call flow shows the call flow when UAS and UAC are set to PRACK Supported option.
UAS Agrees to UAC’s Enforcement
This call flow shows when UAS and UAC are set to PRACK Require option.
UAS Ignores UAC’s Preference
This call flow shows the call flow when UAS is PRACK Supported and UAC is PRACK Disable.
UAS Rejects UAC’s Enforcement
This call flow shows the call flow when UAS is PRACK Require and UAC is PRACK Disable.
UAS Insists UAC MUST Support 100rel
This call flow shows the call flow when UAS is PRACK Disable and UAC is PRACK Require.
UAC Insists on Reliable Delivery of Provisional Responses
This call flow shows when UAS is configured with PRACK Require option.
IMG Acts as UAC and UAS
Basic Call Flow which includes the SDP message.
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The IMG must include an SDP answer in the 200 OK to PRACK when an SDP offer is received in the PRACK request