[Users] Forwarding requests

I have my SER server running on a Linux machine and I am attempting to forward some requests to a Cisco SIP server. I have been running X-lite clients on windows and the same Linux box that the SER server is running on. I have no problem completing calls between the X-lite clients OR with either X-lite client calling the Cisco SIP server directly. However, when I try to make a call from either X-lite client through the SER server I eventually get timeout methods. I am trapping those calls and wrote the following route block: route [5] { record_route(); forward(uri:host, uri:port); } I have tried replacing the forward with send() and t_relay() method calls, but nothing seems to work. The header from the X-lite client directly to the Cisco SIP server, which works is: INVITE sip:2158200@65.221.7.xxx SIP/2.0 Via: SIP/2.0/UDP 166.34.149.xxx:5061;rport;branch=z9hG4bK5963AD09C90F6F3A16F55A271C98F573 From: Harry Harcrow <sip:1000@166.34.149.xxx:5061>;tag=1279481120 To: <sip:2158200@65.221.7.xxx> Contact: <sip:1000@166.34.149.xxx:5061> Call-ID: 28E5B723-9B02-BF38-1A81-1FECC0A85D5E(a)166.34.149.xxx CSeq: 6254 INVITE Max-Forwards: 70 Content-Type: application/sdp User-Agent: X-Lite release 1105d Content-Length: 313 The header from SER to the Cisco server, which does not work is: INVITE sip:2158200@65.221.7.xxx SIP/2.0 Record-Route: <sip:166.34.149.xxx;ftag=2061592395;lr=on> Via: SIP/2.0/UDP 166.34.149.xxx;branch=0 Via: SIP/2.0/UDP 166.34.149.xxx:5061;rport=5061;branch=z9hG4bK4EA9A90B8CE7CE52BFB69DA431560E5 7 From: Harry Harcrow <sip:1000@166.34.149.xxx:5061>;tag=2061592395 To: <sip:2158200@65.221.7.xxx> Contact: <sip:1000@166.34.149.xxx:5061> Call-ID: 38CA166F-59A6-E44B-F34E-9E1D6307698B(a)166.34.149.xxx CSeq: 3009 INVITE Max-Forwards: 16 Content-Type: application/sdp User-Agent: X-Lite release 1105d Content-Length: 313 The only thing that I can see different is the record_route record and an additional Via record. Does anyone have any idea what I am doing wrong? Thanks Harry Harcrow