Hi All, If an initial INVITE from an endpoint offer contains the sdp as follows.
m=audio 15190 RTP/AVP 100 101\r\n a=fmtp:18 annexb=yes\r\n a=fmtp:101 0-15\r\n a=rtpmap:100 UNACCEPTABLECODEC/8000\r\n a=sendrecv the terminating endpoint returns an error response 488 with a warning header as follows. Warning: 306 132.177.120.67:5060 "Attribute not understood" Is 306 is correct response? Thanks,
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