PRACK
200 OK (PRACK)
SDP4
SDP2
200 OK (UPDATE)
a=curr:qos local sendrecva=curr:qos remote nonea=des:qos optional local sendrecva=des:qos mandatory remote sendrecv
RESERVITION
SDP3
200 OK (INVITE)
UEB
current-status = \"a=curr:\" precondition-type SP status-type SP direction-tag desired-status = \"a=des:\" precondition-type SP strength-tag SP status-type SP direction-tag confirm-status = \"a=conf:\" precondition-type SP status-type SP direction-tag precondition-type = \"qos\" | token strength-tag = (\"mandatory\" | \"optional\" | \"none\" = | \"failure\" | \"unknown\") status-type = (\"e2e\" | \"local\" | \"remote\") direction-tag = (\"none\" | \"send\" | \"recv\" | \"sendrecv\") SP Single Space
183 Session Progress
a=curr:qos local sendrecva=curr:qos remote sendrecva=des:qos optional local sendrecva=des:qos mandatory remote sendrecv
UPDATE
a=curr:qos local sendrecva=curr:qos remote sendrecva=des:qos mandatory local sendrecva=des:qos optional remote sendrecv
SDP1
INVITE
UEA
180 Ringing
ACK
