“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.
Cosmonet Integrated Systems, LLC, is the premier international carrier for VOIP communications, successfully utilizing the internet as the substantial element to provide high quality, low cost telecommunication services.
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