I found a part of the problem. 
The kam cfg reg ex had a typo, which i've removed.  

  1. route[FSVBOX] {
  2.         if(!($rU=~"^1[0-9][0-9]+$"))
  3.                 return;
  4.         prefix("vb-");
  5.         route(FSRELAY);
  6. }

So now when I dial 44888 the request makes it to the freeswitch server.  But it bounces it right back to kamailio... and kamailio tries to find an extension called 44888 which doesn't exist.  I think its because the number 44888 matches a regex i have in my main freeswitch dialplan... which is supposed to be for connecting calls between extensions. 
I guess I will have to revisit it to make it more specific... perhaps to ignore calls that come in with a vb- prefix... or any prefix for that matter. 

Thanks.  And sorry for the noise.  

From: mark li <limark67@yahoo.com>
To: "sr-users@lists.sip-router.org" <sr-users@lists.sip-router.org>
Sent: Friday, March 28, 2014 3:33:26 PM
Subject: [SR-Users] Trying to dial 4000 into freeswitch's vmail system - Kam Proxy returning Status 403: Not allowed

Hi there. 
I'm still trying to integrate Kamailio and freeswitch... where kamailio acts as a proxy and registrar ... and freeswitch provides conference calls and voicemail. 
I have calls between two polycoms working and conference calls work. 
But when I try to leave a voice message for a user by dialing 44+ext, the sip proxy never replies to the polycom. 
I did a tcpdump and i can see the INVITE from the polycom to the sip proxy multiple times... but no response back.  The phone eventually disconnects itself. 

Here's what my config looks like:  http://pastebin.com/wWgyVcxc
Just do a search for "route[FSDISPATCH]". 
You will see how I check for the "44" prefix, and then send the call to a route called "FSVBOX".  
Any suggestions would be appreciated. 


  1. route[FSVBOX] {
  2.         if(!($rU=~"^1[0-9][0-9]+$"))
  3.                 return;
  4.         prefix("vb-");
  5.         route(FSRELAY);
  6. }
  7.  
  8. # Send to FreeSWITCH
  9. route[FSRELAY] {
  10.         $du = "sip:" + $sel(cfg_get.freeswitch.bindip) + ":"
  11.                         + $sel(cfg_get.freeswitch.bindport);
  12.         route(RELAY);
  13.         exit;
  14. }


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