Hi,
Let's look into this precondition proposal.
There are some issues that needs to be taken into consideration.
Issue 2:
-----------
Assume I send a re-INVITE, and I use precondition. I modify the SDP, and indicate that preconditions are not met.
Then I receive a relaible 18x, and the first offer/answer transaction has succeeded.
Let's look into this precondition proposal.
There are some issues that needs to be taken into consideration.
Issue 2:
-----------
Assume I send a re-INVITE, and I use precondition. I modify the SDP, and indicate that preconditions are not met.
Then I receive a relaible 18x, and the first offer/answer transaction has succeeded.
Later I send an UPDATE request, where I indicate
that preconditions are met.
Then I
receive a 200 for the UPDATE, indicating that preconditions are met also at the
other end.
Then the re-INVITE fails. Now, according to the ZTE proposal, is there a full fallback? The UPDATE was sent as part of the nested precondition procedure, but the preconditions were fullfilled before the re-INVITE failed?
Does it matter what the precondition state is when the
re-INVITE fails, or is there always a full
fallback?
Regards,
Christer
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