Block internal calls between groups?

[hwcltjn]

Hello,

It seems as though my question has been asked a number of times and that no one has ever found a real solution (or I couldn't find it!) - searching the forums has returned the following threads:

Blocking Extension to Extension calls
Prevent users groups calling other user groups
Internal Call Blocking

I have 3 groups, A, B and C.

I need to prevent groups A and B from calling each other.
However, I need groups A and B to be able to reach group C.

Extensions in group A have format 51XX.
Extensions in group B have format 52XX.
Extensions in group C have format 53XX.

I created the following outbound rule to limit group A from calling group B

Calls to numbers starting with prefix: 52
Calls to numbers with a length of: 4
Calls from extension groups: Group A
Route: Block

It didn't work.

I know I can limit how an extension receives calls by creating an exception under the "Forwarding Rules" tab of the extension's settings - but this is far from ideal.

This could probably be achieved using device dialplans (as has been suggested in some of the other threads) but does not solve my problem if a user is using the 3CX clients.

So...
1 - Is it possible to prevent one group from calling another?
2 - Is it possible to allow extension 5111 to only be able to call extension 5333?

I'm using v15.5 on Debian.

Thanks for any help!

 

[expatel]

Instead of blocking the outbound route, what happens if you create a fake trunk group, and route these calls out over the fake trunk group?

 

[hwcltjn]

Instead of blocking the outbound route, what happens if you create a fake trunk group, and route these calls out over the fake trunk group?

Good idea!
I created a fake trunk pointing to 127.0.01 - registration definitely failed - but it doesn't work unfortunately, call is still routed to the extension.

None of the other threads received answers from anyone at 3CX - could anyone tell us if this is possible?

 

[AndreasPo_3CX]

Hi @hwcltjn,

What you are trying to do can be achieved by adding exceptions to forwarding rules for each extension. Creating an outbound rule did not work because the call is internal and does not get routed through the outbound rule. Essentially you would have to go to every extension in Group A and add an exception for 5200-5299 (ranges are acceptable) and to every extension in Group B and add an exception for 5100-5199.

 

[hwcltjn]

Hi @hwcltjn,

What you are trying to do can be achieved by adding exceptions to forwarding rules for each extension. Creating an outbound rule did not work because the call is internal and does not get routed through the outbound rule. Essentially you would have to go to every extension in Group A and add an exception for 5200-5299 (ranges are acceptable) and to every extension in Group B and add an exception for 5100-5199.

Thanks for the reply @AndreasPo_3CX
That's what I suspected - hopefully there'll be a better way to do this in a not so distant release.

 

[AndreasPo_3CX]

If you believe this is something that should be added you can post it as a feature request on our ideas section of the forum where it can be up-voted by other users and can be evaluated by the appropriate department.

 

[AH2]

Hi @hwcltjn,

What you are trying to do can be achieved by adding exceptions to forwarding rules for each extension. Creating an outbound rule did not work because the call is internal and does not get routed through the outbound rule. Essentially you would have to go to every extension in Group A and add an exception for 5200-5299 (ranges are acceptable) and to every extension in Group B and add an exception for 5100-5199.

Thanks, that works for me, hopefully that can be implemented on Group Settings.