Hi,
1>in the first INVITE, UAC contain a SDP with precondition information like
this:

    Surpported:100rel, precondition
     ...

     m=audio 777 RTP/AVP 1 2 3
     a=curr:qos local none
     a=curr:qos remote none
     a=des:qos mandatory local sendrecv
     a=des:qos none remote sendrecv
     ...

2>UAS receive the request,and UAS is able to send or receive the media
stream with all of the codec,
   but it does not support the precondition, how can it ignore the
precondition information?
   Should it do like this?

   Unsupported:precondition
    ...
    m=audio 777 RTP/AVP 1 2 3
    a=rtpmap: ....
    a=rtpmap: ....
    a=rtpmap: ....
    a=sendrecv


Would appreciate your response.

Thanks
Xi Tang
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