I am trying to help our accounting dept. track down which phone numbers that we pay for each month are actually used (we think we are wasting lots of money with the phone company). On or bill, we have some strange phone numbers that have letters in them. They look like this (I'll use "x" instead of the actual numbers):
xxx-IDH-xxxx
xxx-IFD-xxxx
xxx-DH0-xxxx
Can anyone tell me what these phone numbers might be? We are at a loss. Are they ISDN, or something to do with a PBX system maybe? Any info is appreciated.
xxx-IDH-xxxx
xxx-IFD-xxxx
xxx-DH0-xxxx
Can anyone tell me what these phone numbers might be? We are at a loss. Are they ISDN, or something to do with a PBX system maybe? Any info is appreciated.