[sip-comm] How to use SER with SIP Communicator


Hi friends,
   I want to work with SIP on a LAN.
  For this I have downloaded and installed SER on my local machine. I have managed to login.
  However I am not able to dial up another user who has logged-in. Both of us are on the same LAN.
The error is "Remote part returned error response - 408- Request Timeout"
I am pasting some lines from console of sip-communicator.sh

Call-ID: 224990ce9dffd68b151bc394f811f687@

From: "John Varghese" <sip:john@;transport=udp>;tag=22845412

Via: SIP/2.0/UDP;branch=z9hG4bK0de890eafa356f841c05dc95564ea035
Server: Sip EXpress router (0.8.14 (i386/linux))
Warning: 392 "Noisy feedback tells: pid=3784 req_src_ip= req_src_port=27882 in_uri=sip:sandeep@ out_uri=*sip:*;transport=udp via_cnt==0"
Content-Length: 0

Can anybody please help



To: <sip:sandeep@>;tag=a6a1c5f60faecf035a1ae5b6e96e979a-c802