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.
TELTUB Inc. is a provider of unprecedented phone services to consumers and small businesses. TELTUB phone services can interact, in real-time, with other messaging technologies and platforms.