“Extension” - is the extension of the telephone line (PBX) or the Centrex system. It works as an association and allows calling to certain telephone sets without the necessity of dialing the telephone number, but only by dialing a short combination of digits, reaching the desired subscriber.
Cell Tel Inc. is a leader in mobile communications. Headquartered in Brooklyn, New York, Cell Tel offers easy-to-use and inexpensive wireless technology for individual, family and company use. Using satellite, fiber optic, and Cell Tel`s own patented netwRead more