Symptom
CUBE disconnects the call with error code SIP/2.0 488 Not Acceptable Media after receiving RE-INVITE/SDP message with new crypto keys if there is SIP profile assigned to incoming dial-peer.
Conditions
SIP Profile assigned on incoming dial-peer to remove SilenceSupp from incoming RE-INVITE messages.
Workaround
Remove SIP profile from dial-peer
Further Problem Description
CUBE skipped crypto information in SDP and informed we do not have crypto keys to decode SRTP stream:
023370: Nov 17 13:59:46.826 MET: //250/DA24519B82A0/SIP/Info/verbose/16/sipIfSRTPCryptoSuiteAllow: Remote crypto bm 0x0, Local prefered crypto bm 0x3
023371: Nov 17 13:59:46.826 MET: //250/DA24519B82A0/SIP/Info/critical/16/sipIfSRTPCryptoSuiteAllow: Not found configured/preferred crypto suite SIP: Group (a= group line) attribute, level 65535 instance 1 not found.
023372: Nov 17 13:59:46.826 MET: //250/DA24519B82A0/SIP/Error/sipSPIDoMediaNegotiation:
Failed to negotiate main stream. Main stream dead
