I’ve this problem with callweaver svn-1.2 SVN-7555 and a yealink t-20 phone with 9.50.0.50 firmware release. I can’t register the phone.

<—SIP read from 77.240.XXX.XXX:42766: REGISTER sip:77.239.XXX.XXX SIP/2.0 Via: SIP/2.0/UDP 192.168.1.204:5062;rport;branch=z9hG4bK994596227 From: “204” ;tag=32081892 To: “204” Call-ID: 209718645@192.168.1.204 CSeq: 7 REGISTER Contact: Allow: INVITE, INFO, PRACK, ACK, BYE, CANCEL, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE, REFER, PUBLISH, UPDATE, MESSAGE Max-Forwards: 70 User-Agent: Yealink SIP-T20P 9.43.0.50 Expires: 3600 Mac: 00156516343e Content-Length: 0

- (13 headers 0 lines) - Transmitting (no NAT) to 77.240.XXX.XXX:42766: SIP/2.0 405 Not Allowed Here Via: SIP/2.0/UDP 192.168.1.204:5062;rport;branch=z9hG4bK994596227;received=77.240.XXX.XXX From: “204” ;tag=32081892 To: “204” ;tag=as740dc134 Call-ID: 209718645@192.168.1.204 CSeq: 7 REGISTER User-Agent: wildixgw Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY Max-Forwards: 70 Content-Length: 0

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Instead the T-20 with firmware 9.41.0.70 the registration is ok.

- – - – - – - – - – - – - – - – - – - – - – - – - – - – - – -—- <—SIP read from 77.240.XXX.XXX:42766: REGISTER sip:77.239.XXX.XXX SIP/2.0 Via: SIP/2.0/UDP 192.168.1.204:5062;rport;branch=z9hG4bK588372694 From: “204” ;tag=1525679208 To: “204” Call-ID: 460214894@192.168.1.204 CSeq: 1 REGISTER Contact: Allow: INVITE, INFO, PRACK, ACK, BYE, CANCEL, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE, REFER, PUBLISH, UPDATE, MESSAGE Max-Forwards: 70 User-Agent: T20 9.41.0.70 Expires: 3600 Content-Length: 0

- (12 headers 0 lines) - Using latest REGISTER request as basis request Sending to 192.168.1.204 : 5062 (NAT) Transmitting (NAT) to 77.240.XXX.XXX:42766: SIP/2.0 100 Trying Via: SIP/2.0/UDP 192.168.1.204:5062;branch=z9hG4bK588372694;received=77.240.XXX.XXX;rport=42766 From: “204” ;tag=1525679208 To: “204” Call-ID: 460214894@192.168.1.204 CSeq: 1 REGISTER User-Agent: wildixgw Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY Max-Forwards: 70 Contact: Content-Length: 0

- Transmitting (NAT) to 77.240.XXX.XXX:42766: SIP/2.0 401 Unauthorized Via: SIP/2.0/UDP 192.168.1.204:5062;branch=z9hG4bK588372694;received=77.240.XXX.XXX;rport=42766 From: “204” ;tag=1525679208 To: “204” ;tag=as5392a8ae Call-ID: 460214894@192.168.1.204 CSeq: 1 REGISTER User-Agent: wildixgw Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY Max-Forwards: 70 WWW-Authenticate: Digest algorithm=MD5, realm=”wildixgw”, nonce=”23d2f841” Content-Length: 0

- Scheduling destruction of call ‘460214894@192.168.1.204’ in 15000 ms

<—SIP read from 77.240.XXX.XXX:42766: REGISTER sip:77.239.XXX.XXX SIP/2.0 Via: SIP/2.0/UDP 192.168.1.204:5062;rport;branch=z9hG4bK21797742 From: “204” ;tag=1525679208 To: “204” Call-ID: 460214894@192.168.1.204 CSeq: 2 REGISTER Contact: Authorization: Digest username=”204”, realm=”wildixgw”, nonce=”23d2f841”, uri=”sip:77.239.XXX.XXX”, response=”69a44193994dc95e12e22a0f237f7b9f”, algorithm=MD5 Allow: INVITE, INFO, PRACK, ACK, BYE, CANCEL, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE, REFER, PUBLISH, UPDATE, MESSAGE Max-Forwards: 70 User-Agent: T20 9.41.0.70 Expires: 3600 Content-Length: 0

- (13 headers 0 lines) - Using latest REGISTER request as basis request Sending to 192.168.1.204 : 5062 (NAT) Transmitting (NAT) to 77.240.XXX.XXX:42766: SIP/2.0 100 Trying Via: SIP/2.0/UDP 192.168.1.204:5062;branch=z9hG4bK21797742;received=77.240.XXX.XXX;rport=42766 From: “204” ;tag=1525679208 To: “204” Call-ID: 460214894@192.168.1.204 CSeq: 2 REGISTER User-Agent: wildixgw Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY Max-Forwards: 70 Contact: Content-Length: 0

- 12 headers, 0 lines Reliably Transmitting (NAT) to 77.240.XXX.XXX:42766: OPTIONS sip:204@77.240.XXX.XXX:42766 SIP/2.0 Via: SIP/2.0/UDP 77.239.XXX.XXX:5060;branch=z9hG4bK10944b7e;rport From: “pbxservice” ;tag=as32916d03 To: Contact: Call-ID: 29ab90b8094e7d802f9778183b45a8aa@77.239.XXX.XXX CSeq: 102 OPTIONS User-Agent: wildixgw Max-Forwards: 70 Date: Wed, 14 Jul 2010 14:50:33 GMT Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY Content-Length: 0

- Transmitting (NAT) to 77.240.XXX.XXX:42766: SIP/2.0 200 OK Via: SIP/2.0/UDP 192.168.1.204:5062;branch=z9hG4bK21797742;received=77.240.XXX.XXX;rport=42766 From: “204” ;tag=1525679208 To: “204” ;tag=as5392a8ae Call-ID: 460214894@192.168.1.204 CSeq: 2 REGISTER User-Agent: wildixgw Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY Max-Forwards: 70 Expires: 180 Contact: ;expires=180 Date: Wed, 14 Jul 2010 14:50:33 GMT Content-Length: 0

- Scheduling destruction of call ‘460214894@192.168.1.204’ in 15000 ms <—SIP read from 77.240.XXX.XXX:42766: SIP/2.0 200 OK Via: SIP/2.0/UDP 77.239.XXX.XXX:5060;branch=z9hG4bK10944b7e;rport=5060 From: “pbxservice” ;tag=as32916d03 To: ;tag=847604744 Call-ID: 29ab90b8094e7d802f9778183b45a8aa@77.239.XXX.XXX CSeq: 102 OPTIONS User-Agent: T20 9.41.0.70 Content-Length: 0