“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.
3xnetsolution is a technology company focusing on network technologies with expertise on Voice over IP. The people who found 3xnetsolution have engineered VoIP systems with voice quality enhancement algorithms, which has a customer base including a Fort 3
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