Hi, I have a problem in SIP registration (authentication) with FreeSWITCH server. The SIP messages are: recv 292 bytes from udp/[209.82.10.250]:3458 at 16:35:24.758862: ------------------------------------------------------------------------ REGISTER sip:209.82.10.235 SIP/2.0 Via: SIP/2.0/UDP 209.82.10.250:1059 From: sip:1001@209.82.10.235 To: sip:1001@209.82.10.235 Contact: sip:1001@209.82.10.250:1059 Call-ID: fc383368-e3e0-4c32-b87b-c3127d0cc2d8@192.168.10.23 CSeq: 597775306 REGISTER Content-Length: 0 Expires: 3600 ------------------------------------------------------------------------ send 582 bytes to udp/[209.82.10.250]:1059 at 16:35:24.763948: ------------------------------------------------------------------------ SIP/2.0 401 Unauthorized Via: SIP/2.0/UDP 209.82.10.250:1059 From: sip:1001@209.82.10.235 To: <sip:1001@209.82.10.235>;tag=7yam2F01ZH3vH Call-ID: fc383368-e3e0-4c32-b87b-c3127d0cc2d8@192.168.10.23 CSeq: 597775306 REGISTER User-Agent: FreeSWITCH-mod_sofia/1.0.2-hacked Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, PRACK, MESSAGE, SUBSCRIBE, NOTIFY, REFER, UPDATE, REGISTER, INFO, PUBLISH Supported: timer, precondition, path, replaces WWW-Authenticate: Digest realm="209.82.10.235", nonce="40b63193-85c2-4ed9-874e-c03f81be313d", algorithm=MD5, qop="auth" Content-Length: 0 ------------------------------------------------------------------------ recv 466 bytes from udp/[209.82.10.250]:3458 at 16:35:24.772834: ------------------------------------------------------------------------ REGISTER sip:209.82.10.235 SIP/2.0 Via: SIP/2.0/UDP 209.82.10.250:1059 From: sip:1001@209.82.10.235 To: sip:1001@209.82.10.235 Contact: sip:1001@209.82.10.250:1059 Call-ID: fc383368-e3e0-4c32-b87b-c3127d0cc2d8@192.168.10.23 CSeq: 597775307 REGISTER Content-Length: 0 Expires: 3600 Authorization: Digest username="1001",realm="209.82.10.235",nonce="40b63193-85c2-4ed9-874e-c03f81be313d",response="eebe0ea43319e82cc5f6dba5877de706",uri="sip:209.82.10.235" ------------------------------------------------------------------------ send 458 bytes to udp/[209.82.10.250]:1059 at 16:35:24.774354: ------------------------------------------------------------------------ SIP/2.0 403 Forbidden Via: SIP/2.0/UDP 209.82.10.250:1059 From: sip:1001@209.82.10.235 To: <sip:1001@209.82.10.235>;tag=873c4aH5vtSFD Call-ID: fc383368-e3e0-4c32-b87b-c3127d0cc2d8@192.168.10.23 CSeq: 597775307 REGISTER User-Agent: FreeSWITCH-mod_sofia/1.0.2-hacked Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, PRACK, MESSAGE, SUBSCRIBE, NOTIFY, REFER, UPDATE, REGISTER, INFO, PUBLISH Supported: timer, precondition, path, replaces Content-Length: 0 ------------------------------------------------------------------------ What I have noted is that the client does not send the values for "cnonce" and "nc" in the response. I'm not sure if this is the reason, however how this problem can be solved? Thanks, Ali