That should be perfectly fine, you'd just configure the service differently.
Once you've added the call feature, I'd follow the guide below to configure it.
How to bar all calls to the phone:
Barring - Dial * 261 #
Cancelling- Dial # 261 #
Check status - Dial * # 261 #
How to bar calls from your phone
Barring - Dial * 34 code #
Cancelling - Dial # 34 code * PIN #
Checkstatus -Dial - * # 34 #
Codes 1 - Bar almost all calls including 1571 and Call minder – cancelling this option also cancels any other options you've barred. 2 - Bar national, international, and calls to mobiles 3 - Bar international calls 4 - Bar all operator calls, e.g. 118 numbers 5 - Bar calls to numbers with a * or # in them (includes some Calling Features, but allows you to cancel this option) 7 - Bar calls to Premium Rate numbers.
In your case it sounds like you'd want to dial * 34 7 #
Hope this helps.
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