Hi, I have trixbox and Audiocodes MP-124 FXS. In Asterisk console I often get this message: Got SIP response 481 "Call/Transaction Does Not Exist" back from 86.38.10.233 So I have traced the sip packets, and I saw that Audiocodes MP-124 FXS sends this message ?81 "Call/Transaction Does Not Exist", because Asterisk sends him NOTIFY. So my question is how to turn off this notify? Asterisk IP : 86.38.10.227 MP-124 IP : 86.38.10.233 # U 86.38.10.227:5060 -> 86.38.10.233:5060 NOTIFY sip:7419@86.38.10.233 SIP/2.0. Via: SIP/2.0/UDP 86.38.10.227:5060;branch=z9hG4bK1919bb63. From: "Unknown" < sip:Unknown@86.38.10.227>;tag=as029d6bdc. To: <sip:7419@86.38.10.233>. Contact: < sip:Unknown@86.38.10.227>. Call-ID: 688fa1ea643071cc3c780be7068197b3@86.38.10.227. CSeq: 102 NOTIFY. User-Agent: Asterisk PBX. Max-Forwards: 70. Event: message-summary. Content-Type: application/simple-message-summary. Content-Length: 92. . Messages-Waiting: no. Message-Account: sip:asterisk@86.38.10.227 . Voice-Message: 0/0 (0/0). # U 86.38.10.233:5060 -> 86.38.10.227:5060 SIP/2.0 481 Call/Transaction Does Not Exist. Via: SIP/2.0/UDP 86.38.10.227:5060;branch=z9hG4bK1919bb63. From: "Unknown" <sip:Unknown@86.38.10.227>;tag=as029d6bdc. To: <sip:7419@86.38.10.233>;tag=1c1266127160. Call-ID: 688fa1ea643071cc3c780be7068197b3@86.38.10.227 . CSeq: 102 NOTIFY. Contact: <sip:86.38.10.233>. Supported: em,timer,replaces,path. Allow: REGISTER,OPTIONS,INVITE,ACK,CANCEL,BYE,NOTIFY,PRACK,REFER,INFO,SUBSCRIBE,UPDATE. Content-Length: 0. . Thanks -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20060830/901d49d7/attachment.htm