“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.
Activabilling VoIP Solutions is offering free customization in any panel (upto 3 requests) to change or modify any feature in its Control Panels or IVR solutions.