“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.
Lyman Bros. is an international satellite communications contracting and consulting firm. Lyman Bros. specializes in Engineering & Design, Equipment & Integration, Installation, Connectivity, Monitoring, Internet Technology, and Transportable Systems.
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