[OpenSIPS-Users] opensips + call control

[Nick]

Hello

It's my Server architecture.
_____________               __________
|                   |              |               |
| opensips    |              |  Radius  |
| RTPProxy   | <-----> | CDRTool |
| CallControl |              |  rating   |
|  MySQL      |              |  engine  |
|____________|              |_________|
   CentOS 5.x                  Ubuntu

And Then, It's my opensips config for call control
         if (is_avp_set("$avp(805)")) {
                 $avp(billing_party_domain) = $(avp(805){uri.domain});
         } else {
                 $avp(billing_party_domain) = $fd;
         }

         # account only INVITEs
         if (is_method("INVITE") && !has_totag() && 
is_domain_local("$avp(billing_party_domain)")) {
                 setflag(1); # do accounting
                 $avp(caller) = $fu;
                 create_dialog();
                 call_control();
                 switch ($retcode) {
                 case 2:
                     # Call with no limit
                 case 1:
                     # Call with a limit under callcontrol management 
(either prepaid or postpaid)
                 case -1:
                     # Not enough credit (prepaid call)
                     xlog("L_INFO", "Call control: not enough credit for 
prepaid call\n");
                     sl_send_reply("402", "Not enough credit");
                     exit;
                 case -2:
                     # Locked by call in progress (prepaid call)
                     xlog("L_INFO", "Call control: prepaid call locked 
by another call in progress\n");
                     sl_send_reply("403", "Call locked by another call 
in progress");
                     exit;
                 case -3:
                     # Duplicated callid
                     xlog("L_INFO", "Call control: Duplicated call id\n");
                     sl_send_reply("400", "Duplicated callid");
                     exit;
                 case -4:
                     # Call limit reached
                     xlog("L_INFO", "Call control: Call limit reached\n");
                     sl_send_reply("503", "Too many concurrent calls");
                     exit;
                 default:
                     # Internal error (message parsing, communication, ...)
                     xlog("L_INFO", "Call control: internal server 
error\n");
                     sl_send_reply("500", "Internal server error");
                     exit;
                 }

But Now, I can't work.

In log, always display error.
call-control[8134]: User sip:0911111111 at 220.130.6.180 can make unlimited 
concurrent calls
Nov 15 17:45:45 sfs-staging /usr/local/sbin/opensips[14404]: 
INFO:core:buf_init: initializing...
Nov 15 17:45:45 sfs-staging /usr/local/sbin/opensips[14404]: Call 
control: not enough credit for prepaid call
Nov 15 17:45:45 sfs-staging /usr/local/sbin/opensips[14404]: 
WARNING:call_control:postprocess_request: dialog to trace controlled 
call was not created. discarding callcontrol.
Nov 15 17:45:45 sfs-staging call-control[8134]: Call id 
ZGEyYmU1MDlkY2M4YzY1ODVkMDhjYTg4ZTg4ZWQ3OGU. of 0911111111 at 220.130.6.180 
to sip:0939723377 at 220.130.6.180 canceled by user

Can everyone give me a suggest?? Thank for your help.
Nick