“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.
RSCOM, LTD is a licensed facilities based telecom carrier servicing North America and Global A-Z Destinations. RSCOMs customers and suppliers include, fixed line operators, mobile operators, retail and VoIP service providers, who buy and sell voice and IP telecommunications services.
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