Help with setting spam filter

[moussa854 (Moussa)]

PBX Version: 14.0.16.4
PBX Distro: 12.7.8-2012-1.sng7
Asterisk Version: 16.13.0

We have been using a simple IVR to stop spam calls. I would like to allow some numbers to skip the IVR to reach a human. I saw the post by lgaetz Of Robocalls and Whitelists and we would like to use it. I installed the Dynamic Routes and added the lgaetz-cmcheck.php file to /var/lib/asterisk/agi-bin/ folder and chenged the file permission to asterisk:asterisk.
I appreciate help in the next steps:

Field name	Value
Dynamic Route Name	Allowed DID
Dynamic Route Description	Allowed DID
Enable DTMF Input	No
Announcement	None
Timeout	blank
Validation	blank
Invalid Retries	blank
Invalid Retry Recording	None
Invalid Recording	None
Invalid Destination	Do not set this value
Saved input varibale name	None
Saved result variable name	None
Source Type	AGI
AGI Lookup	lgaetz-cmcheck.php
AGI Result Variable	True,False
Default Destination	IVR: Welcome
Dynamic Route Entries	Match: False; Destination: IVR: Welcome
	Match: True; Destination: Ring group

• Do the above Dynamic Routes values looks right?

• Do I need to add the code below to extensions_custom.conf

       [check-whitelist]
       exten => s,1,Noop(Entering user defined context [check-whitelist] in extensions_custom.conf)
       exten => s,n,AGI(lgaetz-cmcheck.php,${CALLERID(number)})
       exten => s,n,gotoif($["${whitelist}"="false"]?ivr-1,s,1)    ; edit for wherever non-whitelisted calleres should go
       exten => s,n,Return
  

• Is there anything I need to do?

Thanks for your help and input.

[lgaetz (Lorne Gaetz)]

Hi Moussa

The script has to be executable in addition to being owned by asterisk

chmod +x /var/lib/asterisk/agi-bin/lgaetz-cmcheck.php

You have to config the AGI line with:

lgaetz-cmcheck.php,${CALLERID(number)} 

and the result variable with

whitelist

When it’s working correctly, the console output will look like:

-- Executing [s@dynroute-3:1] AGI("SIP/6002-00000005", "agi://127.0.0.1/lgaetz-cmcheck.php,6002 ") in new stack
-- Remote UNIX connection
-- Remote UNIX connection disconnected
-- agi://127.0.0.1/lgaetz-cmcheck.php,6002 : Searching all Contact Mgr groups for 6002
-- agi://127.0.0.1/lgaetz-cmcheck.php,6002 : Found 6002 in Contact Mgr
-- agi://127.0.0.1/lgaetz-cmcheck.php,6002 : Setting Asterisk channel var whitelist to true
-- <SIP/6002-00000005>AGI Script agi://127.0.0.1/lgaetz-cmcheck.php completed, returning 0
-- Executing [s@dynroute-3:2] Set("SIP/6002-00000005", "dynroute=true") in new stack

[moussa854 (Moussa)]

Thank you @lgaetz. It is working, I want to mention that the true and false matches were case sensitive. Great software.