Hi all
I have a question regarding registration expire time.
For some reason, registrar always sets expire time in its 200 OK response 1
smaller than expire in the register request.
After some time, finally Expire time becomes 0 sec.
Does UA should not change expire value in its register request in order to
prevent the value becoming 0?
What do you think?
UA SIP SERVER
REGISTER
expire:20 ------------>
<----------- 200 OK
expire:19
REGISTER
expire:19 ---------->
<---------- 200 OK
expire :18
:
.
REGISTER
expire:1 ---------->
<---------- 200 OK
expire:0
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