I still can't register with another port.
This is what I am getting from ngrep.
interface: \ (10.0.1.0/255.255.255.0)
#
#
U 10.0.1.105:8080 -> 10.0.1.99:8080
  REGISTER sip:10.0.1.99 SIP/2.0..Via: SIP/2.0/UDP 10.0.1.105:8080;rport;bran
  ch=z9hG4bKA2546AEF22FA4766A172D9533D938D55..From: Juan <sip:677403479814529
  @10.0.1.99>;tag=2853267163..To: Juan <sip:677403479814529@10.0.1.99>..Conta
  ct: "Juan" <sip:677403479814529@10.0.1.105:8080>..Call-ID: 1BEBA6527D3A4797
  93E960D259872D75@10.0.1.99..CSeq: 41059 REGISTER..Expires: 1800..Max-Forwar
  ds: 70..User-Agent: X-Lite release 1103m..Content-Length: 0....
#
I 10.0.1.99 -> 10.0.1.105 3:3
  ....E...}@.........i...c........REGISTER sip:10.0.1.99 SIP/2.0..Via: SIP/2.
  0/UDP 10.0.1.105:8080;rport;branch=z9hG4bKA2546AEF22FA4766A172D9533D938D55.
  .From: Juan <sip:677403479814529@10.0.1.99>;tag=2853267163..To: Juan <sip:6
  77403479814529@10.0.1.99>..Contact: "Juan" <sip:677403479814529@10.0.1.105:
  8080>..Call-ID: 1BEBA6527D3A479793E960D259872D75@10.0.1.99..CSeq: 41059 REG
  ISTER..Expires: 1800..Max-Forwards: 70..User-Agent: X-Lite release 1103m..C
  ontent-Length: 0....
#
U 10.0.1.105:8080 -> 10.0.1.99:8080
  ..
#
I 10.0.1.99 -> 10.0.1.105 3:3
  ....E...}B.........i...c..........
I don't know why SER (10.0.1.99) is not sending a 100 trying but instead is sending like the echo of the REGISTER request to 10.0.1.105 3:3 ?
Can some one enlight me?
THANKS
 
Juan