I know of a feature that when you want incoming calls forwarded > to let's say your cellular you can reconfigure the office phone. > However you have to be onsite to do so. But what if you can't get to > the phone. Is there a way of doing this remotely or is there some kind of > auto call forward feature so that if line goes down the system > automatically forwards incoming calls to the cellular.
TELUS has a feature called "Advanced Call Forwarding" that has a touch-tone controlled voice driven interface that lets you call forward calls based on time of the day and/or caller number.
You can enable or disable it remotely.
It's virtually impossible for a telco to automatically forward incoming calls when a line goes down -- There's not really such a thing as a line going down, unless the entire CO goes down, in which case call forwarding typically fails.