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--- Is possible to block internal calls? (http://www1.pbxes.com/forum/threadid.php?threadid=1540561104)

Is possible to block internal calls?

Hi, we've this situation:
office A with 6 extensions with numbers: 2XX
office B with 12 extensions with numbers: 4XX

I have to prevent that office B make calls to own internal extensions (4XX). It can make only external calls or to office A extensions?

To best explain:
extensions 4XX must call only external or 2XX numbers, but not 4XX.
Is this possible?
(I know that i can solve via dial plan on the phone, but i would know if this is possible on the pbx).
Thx!

RE: Is possible to block internal calls?

No, internal calls can't be blocked. Only solution would be changing the extensions.conf on PBXes PRO.