Founded in 1991, Function International is Function Group’s force in the international market.The corporate office located in Atlanta, Georgia, USA provides the research & development, electrical engineering, software programming, and coordination with the Function ATI (Huizhou, China) factory necessary to meet the needs of our international customers.

The satellite offices in Florida-USA, Kuala Lumpur-Malaysia and Metro Manila- Philippines are responsible for direct sales, and establishing agents and distributors worldwide. These offices, as well as the regional agents and distributors, provide Customer Service and Technical Support.

Function International provides the products manufactured by Function Group() 's companies and partners to customers worldwide. These products include coin payphones, card payphones, combination coin & card payphones, payphone management systems, wireless payphones (GSM, TDMA, CDMA,), desktop coin phones, prepaid cellular top-up terminals, and multimedia terminals.