is it possible to create Dynamic DTMF?

[amannick]

Hello

Recently one of my client reported he was targeted by prank caller. They had tons of ROBO calls in queue. I suggested them Dynamic and it did resolve their problem to some extent. However is it possible to create Dynamic DTMF Code?

For example if user calls the TFN it says Press (Random Number) every time.

Thanks

 

[Evolute IT]

Hello

Recently one of my client reported he was targeted by prank caller. They had tons of ROBO calls in queue. I suggested them Dynamic and it did resolve their problem to some extent. However is it possible to create Dynamic DTMF Code?

For example if user calls the TFN it says Press (Random Number) every time.

Thanks

Just put an IVR with a prompt that says "to keep us safe from robocalls, please press 6." Or a random number like that, which you set as the only destination going to your main IVR.

Then set the "no input do:" to end call.

 

[SweetAction]

@ConceptsWeb he wants that number to be random so a robo caller can't program it in.

 

[Evolute IT]

@ConceptsWeb he wants that number to be random so a robo caller can't program it in.

Use a CFD with TTS for the number and a static prompt. Enable all digits on the UserInput and validate using a custom C# script or something like that. Takes about 10min to do.

 

[amannick]

@ConceptsWeb I wish I was the programmer .... is there a way I can get that CFD example or Sample?

 

[amannick]

Also it don't give option to end call if input is incorrect....

 

[amannick]

It's an important task for us as such robo call attacks taking the VoIP billing on toll. Also please share Ideas to stop such calls.

 

[leejor]

The robo calls the I've received do not seem to be capable of inputting any DTMF let alone figuring out the number you've chosen to use, then remembering the next time they call.

If you implement an IVR, then do find some calls are getting through (I doubt they will), you can change it.

Keep in mind that for legitimate callers, you are going to have to tell them what the code is anyway, that's the way the blocking service from PSTN providers works. Yes theirs does vary, but a robot isn't going to understand that you are telling them to press 3, to complete the call. They just start talking once the call is answered.

 

[Evolute IT]

@ConceptsWeb I wish I was the programmer .... is there a way I can get that CFD example or Sample?

There's no sample for that but I know it could be easy.

Also it don't give option to end call if input is incorrect....

View attachment 25934

The CFD can tho.

 

[amannick]

The robo calls the I've received do not seem to be capable of inputting any DTMF let alone figuring out the number you've chosen to use, then remembering the next time they call.

If you implement an IVR, then do find some calls are getting through (I doubt they will), you can change it.

Keep in mind that for legitimate callers, you are going to have to tell them what the code is anyway, that's the way the blocking service from PSTN providers works. Yes theirs does vary, but a robot isn't going to understand that you are telling them to press 3, to complete the call. They just start talking once the call is answered.

I regret I don't agree with you leejor. As I have experienced cases where ROBO calls are easily passing through standard DTMF or even IVR. This is the reason I am reaching out to 3CX.

 

[leejor]

So what you are saying is that the robo caller is (presumably) using speech recognition (or some sort of AI), and therefor understands which digit to press to get the call to go through, in the same manner that a legitimate (human) caller would do. If you do have legitimate callers calling, you are going to have to inform them, in the outgoing message, what to push, to continue their call, even if you change it each time.

Every Robo call that I have received, and most, now a days end up as a voicemail, starts with some pitch to get you (scare you) to press a button, indicating to them, that a real person has taken the bait. Usually something about unusual charges on your bank card, or unpaid income taxes, that are going to result in you going to jail. At this point you will be connected to a human, that will continue with the charade.

The whole idea is to get a robot to place the call (do the dirty work), and only bring in a real person when it's confirmed that someone has answered, and fallen for the scam. If no one responds, then the auto dialler moves on to the next number.

Have you tried simply introducing an IVR, that offers an informative message? (You have reached the ABC company. We are located at 1234 Main St. .Our office hours are 8am to 5pm, Monday to Friday. We now offer a curbside pickup service. Please press 3 to be connected to one of our agents, Thank you.),