My two IP Phone were able to register to SER before I enable disgist Authentication. I capture the packets between SER and one of the phone saw that the Phone send a registration but SER replies Destination unreachable.. Below is the capture summary from Ethereal Source: 192.168.77.152 (192.168.77.152) Destination: 192.168.77.151 (192.168.77.151) User Datagram Protocol, Src Port: 5060 (5060), Dst Port: 5060 (5060) Source port: 5060 (5060) Destination port: 5060 (5060) Length: 412 Checksum: 0x3c0c (correct) Session Initiation Protocol Request-Line: REGISTER sip:sipproxy.amatek.net SIP/2.0 Method: REGISTER Resent Packet: False Message Header Via: SIP/2.0/UDP 192.168.77.152:5060;branch=z9hG4bKOphgqvT15 Max-Forwards: 70 User-Agent: iPH-D00-2G From: "777126" <sip:777126@sipproxy.amatek.net>;tag=sW0vQoefhteOBUMJ SIP Display info: "777126" SIP from address: sip:777126@sipproxy.amatek.net SIP tag: sW0vQoefhteOBUMJ To: "777126" <sip:777126@sipproxy.amatek.net> SIP Display info: "777126" SIP to address: sip:777126@sipproxy.amatek.net Call-ID: ikzXiceMcMg3NTcL(a)192.168.77.152 CSeq: 30944 REGISTER Contact: <sip:777126@192.168.77.152:5060> Expires: 30 Content-Length: 0 No. Time Source Destination Protocol Info 7 15.031286 192.168.77.151 192.168.77.152 ICMP Destination unreachable Frame 7 (474 bytes on wire, 474 bytes captured) Ethernet II, Src: 00:06:5b:6a:66:61, Dst: 00:09:45:10:22:9c Internet Protocol, Src Addr: 192.168.77.151 (192.168.77.151), Dst Addr: 192.168.77.152 (192.168.77.152) Version: 4 Header length: 20 bytes Differentiated Services Field: 0xc0 (DSCP 0x30: Class Selector 6; ECN: 0x00) Total Length: 460 Identification: 0xaef6 (44790) Flags: 0x00 Fragment offset: 0 Time to live: 64 Protocol: ICMP (0x01) Header checksum: 0xacfa (correct) Source: 192.168.77.151 (192.168.77.151) Destination: 192.168.77.152 (192.168.77.152) Internet Control Message Protocol Type: 3 (Destination unreachable) Code: 3 (Port unreachable) Checksum: 0x1b2b (correct) Internet Protocol, Src Addr: 192.168.77.152 (192.168.77.152), Dst Addr: 192.168.77.151 (192.168.77.151) Version: 4 Header length: 20 bytes Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00) Total Length: 432 Identification: 0x00e6 (230) Flags: 0x00 Fragment offset: 0 Time to live: 128 Protocol: UDP (0x11) Header checksum: 0x1bd7 (correct) Source: 192.168.77.152 (192.168.77.152) Destination: 192.168.77.151 (192.168.77.151) User Datagram Protocol, Src Port: 5060 (5060), Dst Port: 5060 (5060) Source port: 5060 (5060) Destination port: 5060 (5060) Length: 412 Checksum: 0x3c0c (correct) Session Initiation Protocol Request-Line: REGISTER sip:sipproxy.amatek.net SIP/2.0 Method: REGISTER Resent Packet: False Message Header Via: SIP/2.0/UDP 192.168.77.152:5060;branch=z9hG4bKOphgqvT15 Max-Forwards: 70 User-Agent: iPH-D00-2G From: "777126" <sip:777126@sipproxy.amatek.net>;tag=sW0vQoefhteOBUMJ SIP Display info: "777126" SIP from address: sip:777126@sipproxy.amatek.net SIP tag: sW0vQoefhteOBUMJ To: "777126" <sip:777126@sipproxy.amatek.net> SIP Display info: "777126" SIP to address: sip:777126@sipproxy.amatek.net Call-ID: ikzXiceMcMg3NTcL(a)192.168.77.152 CSeq: 30944 REGISTER Contact: <sip:777126@192.168.77.152:5060> Expires: 30 Content-Length: 0 --------------------------------- Post your free ad now! Yahoo! Canada Personals