Change SDP line in 183
Acme Packet OS VM SCZ8.3.0 MR-1 Patch 8A (Build 366)
Oracle Linux branches-7/el7-u7 {2020-03-25T07:00:00+0000}
Build Date=06/06/20
We are receiving INVITE's on a realm which requires preconditions.
I'm struggling because the SBC sends back a line that is invalid according to RFC 331.
The initial INVITE from the other party contains these attributes:
a=curr:qos local none a=curr:qos remote none a=des:qos mandatory local sendrecv a=des:qos optional remote sendrecv
And after the 100 Trying, the SBC sends back a 183 Session Progress with these attributes:
a=curr:qos local unknown a=curr:qos remote none a=des:qos mandatory local sendrecv a=des:qos mandatory remote unknown
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