I will be installing a UC520 with a PRI for the first time. Previously I have only worked with analog/FXO ports. I have two questions:
1) How much different is working with PRI than FXO?
2) My main concern is outgoing caller ID. Of all the DIDs only two are important. The primary office line and the primary FAX line. I want to make sure that all outgoing calls made via phones show the caller ID of the main office line. Also the FAxes that use the PRI must show the primary FAX DID for outgoing. How do I go about doing this?