“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.
Cybertell VOIP solutions provider.
Our primary business includes A-Z termination services,
implementing of PSTN & multiplatform networks,
retail & reseller solutions for VOIP services.