“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.
Prime Time Telecoms Inc, is a privately-held telecommunications service provider and one of the leading companies in the rapidly growing VoIP interconnectivity market in Japan. A registered (ITSPs) and VoIP Wholesale Providers.