Grandstream GXW 4004 offers small organizations, home users, remote offices and companies with a territorial work system a high-performance solution with excellent price/quality ratio to more effectively manage the cost of communication, while expanding the functionality of existing telephone systems in organization. Grandstream GXW 4004 is a solution, which easily integrates into existing VoIP FXS phone systems and FXO gateways.
Cyber Tel Communication is one of the first voice over IP(VOIP) providers in Tehran-Iran.
Our company started out by providing phone to phone international calling services and has since expanded its operation to incorporate the latest technologies in