________________________________________ From: [email protected] [[email protected]] On Behalf Of Jos?? Tudela de la Rosa [[email protected]]
SIP/2.0 420 Extension Not Supported From: "John Doe"<sip:mailto:[email protected]>;tag=2f7000-6f01a8c0-13c4-45026-159-53767a6c-159 To: "John Doe"<sip:mailto:[email protected]>;tag=vlysYA Call-Id: 3134e0-6f01a8c0-13c4-45026-0-5841bf3c-0 Cseq: 6 REGISTER Via: SIP/2.0/UDP 192.168.1.111:5060;rport=5060;branch=z9hG4bK-159-54473-d6e85 ;received=187.145.100.1 Unsupported: com.nortelnetworks.firewall Server: sipXecs/4.2.1 sipXecs/sipXproxy (Linux) Date: Fri, 13 Aug 2010 16:51:34 GMT Content-Length: 0 _______________________________________________ This response means that the phone sent a REGISTER message containing a "Require: com.nortelnetworks.firewall" header. (Or perhaps a "Proxy-Require: com.nortelnetworks.firewall" header; I can't tell since you didn't include the REGISTER message.) Since that "option tag" is proprietary to Nortel, sipX doesn't handle it and so must reject the request with a 420 response. It's unlikely that the phone can only function using this option tag, as that would make the potential market for it very small. I strongly suspect that the header is included because some specific feature of the phone has been configured "on". The trouble is to determine how to turn it off. One thing to try is to turn off any "NAT support" options in the phone -- sipXecs does NAT compensation for the phone, and for that to work correctly, the phone should not be trying to do it also. Another thing to look for is any item in the configuration menus that resembles "nortelnetworks" and "firewall". Perhaps your phone vendor can help. Dale _______________________________________________ sipx-users mailing list [email protected] List Archive: http://list.sipfoundry.org/archive/sipx-users/
