[OpenSIPS-Users] Setting CallerID Name

[Matt Smith]

Hello List,

I have a few carrier clients who are looking to use our CNAM (Caller
ID Name) service, and seeking to do lookup directly on OpenSIPS,
rather on the switch sitting behind the SIP router.

We've provided our clients the following script snippets that uses the
PERL module to perform the necessary HTTP lookup and set an AVP that
will be used to change the Caller ID name with "uac_replace_from"
function.

Can anyone suggest a better of doing the lookup and changing the
Caller ID Name? Is there a way to perform the HTTP lookup directly
from the OpenSIPS script? Also, how can we set a timeout on Opensips
to give up on the Perl script if no response is received after let's
say 1000ms, and return to regular routing?

Here's our OpenSIPS script snippet:

modparam("perl", "modpath", "/usr/lib/opensips/perl/")
modparam("perl", "filename", "/etc/opensips/bulkcnam.pl")

route {
               if (method == "INVITE") {
                       route(6);
                       return;
               }
}

route[6] {
               perl_exec("cnamgetname");
               uac_replace_from("$avp(i:201)","");
               avp_delete("*");
               // Continue Routing...
}

bulkcnam.pl File:

use OpenSIPS qw ( log );
use OpenSIPS::Constants;
use IO::Socket;
use HTTP::Request;
use LWP::UserAgent;

sub cnamgetname {
       my $m = shift;
       $number = $m->getHeader(qw ( From));
       $number = test('sip:(.*?)\@', $number);
       my $server = "http://cnamserverIP/?id=BulkCNAM-ID-here&did=";
               $request = HTTP::Request->new( GET => $server.$number );
               $ua = LWP::UserAgent->new;
               $response = $ua->request($request);
               if ($response->is_success) {
                       $name = $response->content;
               }
               OpenSIPS::AVP::add(201,$name);

       return 1;
}

sub test($$)
       {
       my $lookfor = shift;
       my $string  = shift;
       if($string =~ m/$lookfor/)
               { return $1 }
       }


Thanks,

Matt S.