“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.
ACK communication GmbH is now looking for resellers all over the world. We have latest Voip products that include PC2Phone, PC2PC, Calling Cards, voip from Mobile, Callback, IP PBX solutions and many more.