In order for it to work Richard their must be a point of coverage for SAC to send it to. With console permissions turned on your set you can use any feature in the "disp fea" list. Just use the activation codes and away you go. Although the (*3) is probably the system wide setting and anyone can use it. It's like that so analog sets can also use the features.

Mike Jones
"A people that values its privileges above its principles soon loses both."
- Dwight D. Eisenhower (1890-1969), Inaugural Address, January 20, 1953