Starting today... new federal rules will allow cell phone customers to keep their number... even if they switch cell phone COMPANIES. The new rules also allow home phone numbers to be switched to cell phones, and vice versa. It's called number portability... and the Federal Communications Commission made the rule changes to spur competition. Joining us on the line to explain all the changes is Brian Callahan... executive vice president of Communications Consulting and Coordination... a telecommunications consulting firm in Brooklyn Park. That is telecommunications consultant Brian Callahan. Coming up in the next half hour on Future Tense, a look at changing attitudes about telephones and television.