How to set Random Callerid in asterisk(vicidial goautodial freepbx)
Why Random callerid setting required
In call centers sometimes they need to show random callerids for each call, which are generated by autodiallers or predictive diallers ,so customers wont see that call is from same center.
in this blog i will show two methods to set random callerid in asterisk or vicidial or goautodial based diallers, pbx.
Option 1 : using RAND function in asterisk
RAND Function can be used in a scenario , if you have a range of DID's like 40004001 to 40004999
pick any one number randomly within this range and set it has callerid.
Before entering the dialplan , let me explain little bit about RAND function
Asterisk Function RAND
Synopsis:
Choose a random number within a range
Description:
RAND(min,max)
choose a random number between min and max , min default to 0 if not specified, while max may be upto 2147483647
Lets get in to dialplan
For eg: consider the DID range as 40004001 to 40004999
those who use plain asterisk setup use the below dialplan
exten => _9X.,1,Set(CALLERID(num)=${RAND(40004001,40004999)})
exten => _9X.,2,Dial(SIP/VOIPTRUNK/${EXTEN:1})
exten => _9X.,3,Hangup()
Note:
for vicidail /goautodial you have to use below dialplan
exten => _9X.,1,AGI(agi://127.0.0.1:4577/call_log)
exten => _9X.,2,Set(CALLERID(num)=${RAND(40004001,40004999)})
exten => _9X.,3,Dial(SIP/VOIPTRUNK/${EXTEN:1},,Tto)
exten => _9X.,4,Hangup()
Option 2 : Using php AGI script
This method can be used were you have numbers ie: not in range, numbers are placed in a txt file, from which a random number will be filtered and set as callerid.
note: you must have PHPAgi installed in your pbx server under agi directory
phpagi download link clickhere
1a. Download the PhpAgi from this link to your windows desktop
1b. Use winscp Copy the file to /var/lib/asterisk/agi-bin directory.
1c. use putty to login to linux /asterisk server
1d . cd /var/lib/asterisk/agi-bin/
1e. tar -xvzf phpagi-2.20.tgz
1f. chmod -R 777 phpagi-2.20
1G. create a file named randomcid.php under /var/lib/asterisk/agi-bin
cd /var/lib/asterisk/agi-bin
vi randomcid.php
2. copy the below script and paste in randomcid.php
#!/usr/bin/php
<?php
include 'phpagi-2.20/phpagi.php';
$agi = new AGI();
$numbers = file('/var/lib/asterisk/agi-bin/cids-list.txt');
$cid = array_rand($numbers, 1);
//return trim($numbers[$cid[0]]);
$newCID = trim($numbers[$cid]);
//echo $newCID;
$agi->set_variable("CALLERID(num)", $newCID);
?>
3. create a file named cids-list.txt under /var/lib/asteisk/agi-bin
and fill you numbers in a single column
vi /var/lib/asterisk/agi-bin/cids-list.txt
4. now we will write a dialplan with AGI function
for plain asterisk
exten => _9X.,1,AGI(randomcid.php)
exten => _9X.,2,Dial(SIP/VOIPTRUNK/${EXTEN:1})
exten => _9X.,3,Hangup
for Vicidial or goautodial
exten => _9X.,1,AGI(agi://127.0.0.1:4577/call_log)
exten => _9X.,2,AGI(randomcid.php)
exten => _9X.,3,Dial(SIP/VOIPTRUNK/${EXTEN:1},,tTo)exten => _9X.,4,Hangup
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