Can I route the prefix '9' to local extensions?

Since '9' is the default prefix of out-group calls, we need change the out-group prefix firstly.

Step 1: Please refer to this topic to change the default out-group call prefix.

Step 2: Please click menu "Dial plan / Analyze called number" and add a new record with following values:

Called number prefix = 9
Route type = local user

Then, when we dial "9xxxx", calls will be sent to extensions "9xxxx" directly.