i need to configure two phone for two user with same extension number.
Extension 10 user 110
Extension 11 user 111
Extension 12 user 112
Extension 10 user 210
Extension 11 user 211
Extension 12 user 212
When Department A call Department B, it can dial 8xx When Department B call Department A it can dial 8xx
How i can make this?
In gui if i insert extension for department B i have this error
Extension number already in use by …
I have try to change Context in extension but i have same error…