Restricting Outbound Calls


I have been tasked with setting an additional extension/line for 4 phones in our office for the users to take CC payments on a non recorded line. We also want to make that line inbound only. What would be the best way to implement this?

We are on FreePBX 11 with asterisk.

I am very new to PBX configuration, the extent of my knowledge is primarily restricted to creating extensions.

Probably the easiest way would be to create an inbound route (using a DID of your choice) with recording disabled and send it to some sort of ring group or queue consisting of the (4) phones.