Im looking for a way to block all incomming calls to a certain extension, except specific calling numbers.
My customer wants no one to call that extensions except certain cell phones.
Im running an H.323 Gateways and i was playing arround with the call block feature. I can block all callers or only specific callers, but i didnt find a way to black all EXCEPT a few.
I hope someone has an idea.
Thanks in advance!