VoIP Mailing List Archives

[atux at null.net]

Hi. I would like to blacklist a few callers and I have been using the *CLI> database put blacklist 1234 "annoying callers". Instead of putting the same command for every user is there any way to have a file? Ideally a file in /opt that I would update the blacklisted numbers (add,remove). Is there anything like that, please?

[asterisk.org at sedwar...]

On Sat, 27 Aug 2016, tux john wrote:

[atux at null.net]

Hi. Thanks a lot for the reply. Script seems good, but i am stuck on how
to make it.




On 27/8/2016 10:48 μμ, Steve Edwards wrote:

[asterisk.org at sedwar...]

Please don't top-post.

[johnkiniston at gmail.com]

Here is a quick and dirty bash script to do it that I wrote you.

#!/bin/bash
if ( asterisk -rx "database deltree blacklist")
        then
                echo "Blacklist Cleared"
        else
                err "ERROR Failed to clear Blacklist, Exiting."
                exit 1;
fi

while IFS=, read TN REASON
do
if ( asterisk -rx "database put blacklist \"${TN}\" \"${REASON}\"")
   then
           echo "Inserted $TN $REASON to Blacklist"
   else
         err "ERROR Insert Failed on $TN."
         exit 1;
fi

done < blacklist.csv
unset IFS



It reads from the file blacklist.csv in the same directory with the format of NUMBER,"DESCRIPTION/REASON"



On Sat, Aug 27, 2016 at 8:59 AM, tux john <atux@null.net (atux@null.net)> wrote:

[tim.strommen at gmail.com]

Sorry, Gmail took my conversation with John off-list somehow,  I'll repost what I had set here (sorry, it's going to be a bit big now), and I will be more careful in the future:

First part:


I'm using Grandstream phones, so I have XML soft-keys, what hardware do you have and how good are you with dialplans?  You'll have to do some re-work unless you have an exact match for my setup.  I'm doing my best to give you the functional code, I have to change a bunch of stuff to not leak the security things I do in my code and some of the way more involved stuff I do.  this should at least get you running I think.  Portions between "CODE:  /CODE" tags are the functional dialplan code, I tried to comment a lot here to explain what's happening, but I may have broken something in the process.  Also, be aware that I generate custom sound files, so if you try to run the code and it throws an error about sound-file does not exists, that's why.

For this, I am using the internal DB in Asterisk (https://wiki.asterisk.org/wiki/display/AST/Asterisk+Internal+Database).


The first part is easy, but also very important - filter your Caller-ID data (in computers, we NEVER trust data from a source we don't generate), CODE:


[incommingcall]
exten => 15555551234,1,Set(CalledNumber=${15555551234})               ; Primary incoming phone line, number changed to protect my phone number
same => Set(CallEventTime=${STRFTIME(${EPOCH},,%m-%d-%Y_%H.%M.%S)}
same => n,Set(CALLERID(name)=${FILTER(A-Z0-9\s,${CALLERID(name)})})
same => n,Set(CALLERID(num)=${FILTER(0-9,${CALLERID(num)})})
same => n,Verbose(Incomming call to main phone number)
same => n,Goto(IVR-Menu,IVRStart,1)



/CODE - Then you hit phone numbers that don't have caller ID with the special three-tone application that sounds like a phone company message, CODE:


[IVR-Menu]
exten => IVRStart,1,Zapateller(nocallerid)                 ; Before answering we do the sound for no-caller ID calls
same => n,Zapateller(answer,nocallerid)                    ; This is where the phone call gets answered, we hit no-caller ID calls again here
same => n,Wait(1)
same => n,Playback(call-recording-warning)              ; Legally required message: "For quality control purposes, this call may be monitored."
same => n,Wait(2)
same => n,Monitor(wav,Inbound_to_${CalledNumber}_from_${CALLERID(num)}_${CallEventTime})  ; Yes, I record every call in an out.

same => n,GotoIf($["${CalledNumber}" != "15555551234"]?BlacklistFilter)  ; Number changed to protect my toll-free costs!!!


/CODE - I had a problem with political phone calls to my 855 number this past spring, so I added this little routine to prompt the caller for a single random digit to be entered to prove they could interact, that stopped all the calls from getting through.  CODE:


; special human test for toll-free

same => n,Set(TOLLFREERAND=${RAND(0,9)})
same => n,Read(HUMANTEST,thank-you&human-test&${TOLLFREERAND}&now,1,,1,5)   ; Says "Thank you. If you're a human, please press the number: {RANDOM}, now.", like a captcha.
same => n,GotoIf($["${HUMANTEST}" = "${TOLLFREERAND}"]?BlacklistFilter) ; If the random number matches what they entered they move on in the dialplan
same => n,Playback(do-not-call-warning)                   

; I have a message that states when this number was added to the FTC do-not-call list,
; requests removal of the number from the current list, and warns that the call and information was recorded

; and will be turned over to the FTC if the calls continue.

same => n,Hangup()  ; Yes, if a human can't be bothered to press one button when calling a number I pay the minutes for, I won't be bothered to talk to them.


/CODE - now we can get into the stuff that handles the blacklists and telemarketers.  CODE:


; return to regular program

same => n(BlacklistFilter), Verbose(Checking caller ID against blacklist)
same => n,GotoIf($[DB_EXISTS(blacklist\${CALLERID(num)})]?:TelemarketerFilter) ; If the caller ID is not in the blacklist DB family, it goes to the telemarketer check
same => n,VoiceMail(Blacklist@OtherAccounts,s)
same => n,Hangup()
same => n(TelemarketerFilter), Verbose(Checking caller ID against telemarketer list)
same => n,GotoIf($[DB_EXISTS(telemarketer\${CALLERID(num)})]?:IVRInteractiveStart) ; If the caller ID is not in the blacklist DB family, it goes to the telemarketer check

same => n,VoiceMail(Telemarketer@OtherAccounts,s)
same => n,Hangup()


/CODE: Then if the caller ID is not on either list, they go into the start of the IVR.  Everything up until now takes about 8 seconds, I limit "appeal" voicemails to 30 seconds by account limit, so that if one managed to come in through my toll-free number, it wouldn't finish the first minute of billing.  CODE:


same => n(IVRInteractiveStart),Verbose(Dialplan continues here)
;
; ...redacted...
;
same => n,Hangup()




/CODE.




You'll have to tell me more about your phones to know what you are doing with called user prompts.  You can enter the numbers into the DBs manually from the console using the DB commands: https://wiki.asterisk.org/wiki/display/AST/Asterisk+Internal+Database


I hope this makes sense...




Second part:




One more thing, I didn't mention when I cut down the code, which is good food for thought - I also have a "whitelist" for friends and family.  This is the better way for a public facing phone number, people you know who will call you, you can skip most of the boring stuff if you "trust" the source phone number.

I do call screening on all incoming calls, unless they are on the whitelist.  How that works is similar, I screen once if it's a new number, and the file-name of the name they said during the screening recording is saved to the the whitelist DB as:


CODE:


same=>n,Set(DB(whitelist\${CALLERID(num)}=${FILENAMEASVALUE}))


/CODE


That way when I get connected the next time they call, I get a phone call from the home phone system, and instead of playing the screening prompt, I get: "Connecting you to {recorded name}"


For a custom find-me-follow-me function, I wrote a menu that uses the 5 options:
1 = Connect me
2 = Connect me, add to whitelist
5 = Send to my Voicemail
7 = Add to Telemarketer list
9 = Add to Blacklist


That's done in a Macro and you could do that with basically any phone.  So my basic process (with several omissions) is:


* New Incoming call
* Set up and filter variables
* Start a recording
* If it's a toll-free, do a "captcha" human-test
* Check if they are on the whitelist, if they are skip to the IVR

* Get rid of the new "easy" telemarketers
* Check if they are on the blacklist, get rid of them if they are
* Check if they are a known Telemarketer, get rid of them if they are
* Ask for the extension/user

* On user answer, If on the whitelist connect, if not screen
* If no answer, take a message.


-T




END OF REPOST...


Thread should be caught back up now (again, very sorry!!!).


I hadn't gotten to the Macro, as John hasn't responded yet anyway.



Kevin what phones are you using?  Depending on how your phones work, there are various way to get this to happen.


If your phones don't have hot keys, a quick and dirty way to "kiss-off" unwanted callers is to create an extension that an internal-called-user can transfer the caller to.  You can even use a "dumb" touch-tone phone that way.


Best,


-Tim




On Mon, Aug 29, 2016 at 2:31 PM, <kc6ovd@gmail.com (kc6ovd@gmail.com)> wrote:

[tim.strommen at gmail.com]

Hi Kevin,


Looks like your gmail did the same thing mine did, took the conversation off-list (unless you meant to do that).

If as you mention you're running a mix of POTS and SIP, I'd recommend sticking with the transfer call method (set the hook/trigger in the features.conf file).  That way if anyone picks up ANY phone in your house they have a consistent procedure for dealing with those calls.  It will add to the confidence of your users and will score points with wife not having to learn and remember several procedures - a label with the hint would go a long way here.


That's what I'll be doing for my aging parents, who feel helpless to the effect of the bothersome calls, and don't want a complicated solution to the issue.




-Tim

[mailinglist at linuxis...]

On Sat, 2016-08-27 at 17:59 +0200, tux john wrote: