Solved Restrict Dialing Specific Extensions From IVR

[NJohnson]

Somehow, people outside our company have figured out what one of our overhead paging extensions is and have been crank calling it at random times from random numbers. I need to keep outside callers from dialing our paging extension while still allowing dialing to all other extensions. I found the IVR_DIRECT_DIALING_GRAMMAR parameter and put in the syntax ((?!901|910|912|913|930|931)[0-9]{3}). I restarted all 3CX services and tested calling in from my mobile and was still able to get to extension 930 from one of our digital receptionist. Am I going about this the wrong way, is there a different or better way to achieve this? Perhaps my syntax is incorrect? Any pointers will be greatly appreciated.

 

[Alphabetic]

Give this a read

Thread 'Stop external calls dialling ext numbers on IVR (V20)'

Dec 9, 2024

Hi,

I have a customer reporting that one of their exts is receiving external calls when it should not be. I have looked in the call logs and can see the caller dialled the ext number and connected directly. Is there a way for me to turn off extension dialling on a digital receptionist in V20?

Thanks

• Adrian-Blue
• Replies: 3
• Forum: Phone System / PBX

Alternatively, turn off DTMF in the IVR and create an additional option to "route by name"

 

[ivank]

Try adding DN property DIRECT_FROM_IVR = 0 to the paging extension.

 

[Alphabetic]

Try adding DN property DIRECT_FROM_IVR = 0 to the paging extension.

This is really handy to know.

i'll expand on this for you @NJohnson as you wont know where to go.

In parameters search for DEVELOPMENT_DNTABLE_EXPOSE and set value to 1.

this will show DN Properties Tab (Above)

From there select your ext and add the parameter Ivank mentioned.

 

[Alejandro_3CX]

Somehow, people outside our company have figured out what one of our overhead paging extensions is and have been crank calling it at random times from random numbers. I need to keep outside callers from dialing our paging extension while still allowing dialing to all other extensions. I found the IVR_DIRECT_DIALING_GRAMMAR parameter and put in the syntax ((?!901|910|912|913|930|931)[0-9]{3}). I restarted all 3CX services and tested calling in from my mobile and was still able to get to extension 930 from one of our digital receptionist. Am I going about this the wrong way, is there a different or better way to achieve this? Perhaps my syntax is incorrect? Any pointers will be greatly appreciated.

Hi @NJohnson instead of editing the pbx parameters and perform changes that later the administrator will forget or will not how to revert, it is better implementing either a DTMF Script with the extensions and destinations you want to keep or just disable the parameter below within the existing IVR.

 

[NJohnson]

I don't want to completely remove the ability to dial extensions from IVRs, as a lot of our local agencies call into specific people/departments on a regular basis. I just want to remove those 6 extensions from that ability. I tested @ivank solution and that works perfectly! Thanks to @Alphabetic for expanding on that, as I was a little lost on it as I didn't know there was a hidden DN table. Consider this issue resolved.