Hi,
We are implementing a one way video streaming application with
QoS.Whatshould be the qos parameters in SDP for a streaming
application(Video is
send from offerer to answerer),different implementation seems to be behaving
different ways for qos negotiation.Would like to know which of the following
call flow is valid
Flow 1
INVITE
a=curr:qos local none
a=curr:qos remote none
a=des:qos mandatory local send
a=des:qos none remote send
183
a=curr:qos local none
a=curr:qos remote none
a=des:qos mandatory local recv
a=des:qos mandatory remote recv
a=conf:qos remote recv
PRACK
a=curr:qos local none
a=curr:qos remote none
a=des:qos mandatory local send
a=des:qos mandatory remote send
200 OK for PRACK
a=curr:qos local none
a=curr:qos remote none
a=des:qos mandatory local recv
a=des:qos mandatory remote recv
a=conf:qos remote recv
UPDATE
a=curr:qos local send
a=curr:qos remote none
a=des:qos mandatory local send
a=des:qos mandatory remote send
200 OK UPDATE
a=curr:qos local recv
a=curr:qos remote recv
a=des:qos mandatory local recv
a=des:qos mandatory remote recv
Flow 2
INVITE
a=curr:qos local none
a=curr:qos remote none
a=des:qos mandatory local send
a=des:qos mandatory remote recv
183
a=curr:qos local none
a=curr:qos remote none
a=des:qos mandatory local recv
a=des:qos mandatory remote send
a=conf:qos remote send
PRACK
a=curr:qos local none
a=curr:qos remote none
a=des:qos mandatory local send
a=des:qos mandatory remote recv
200 OK for PRACK
a=curr:qos local none
a=curr:qos remote none
a=des:qos mandatory local recv
a=des:qos mandatory remote send
a=conf:qos remote send
UPDATE
a=curr:qos local sendrecv
a=curr:qos remote none
a=des:qos mandatory local send
a=des:qos mandatory remote recv
200 OK UPDATE
a=curr:qos local sendrecv
a=curr:qos remote sendrecv
a=des:qos mandatory local recv
a=des:qos mandatory remote send
Regards
Allen
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