“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.
Our telephone systems embrace the latest feature-rich power of internet telephony voice-over-IP technology with the carrier-grade resilience that our customers demand, allowing cheaper calls to most international destinations.