Working on a Nortel Mics 6.0 .Is it possible to call forward d.i.d.s externally without having to have a phone or a ata programmed with the d.i.d.s, Tried a few different things in programming but have not found a solution. Customer is shutting down a part of the plant and wants to be able to call forward the d.i.d.s to cell phones without having the sets working.