1. TT-596 / 597 / 598 is a series of GSM indoor payphone integrated with traditional and most popular design, and the base station is easily to set up in any indoor location.
2. CDMA option.
1. Using GSM high quality dual band module to support 900MHz/1800MHz dual band service. 2.Card reader: (1) TT-596 => IC card. (2) TT-597 => PIN card. (3) TT-598 => SIM card. 3. Eight special buttons are designed to meet customers request ex: new call, language and send number. 4. With flash memory system can be easily upgraded. 5. Having circuit error detection feature to display error code and suspend service. 6. Optional SIM card Reader module to upgrade TT-597 to TT-598 SIM card GSM payphone. 7. A built-in battery can back up continuous talking for 4 hours or standing by over 10 hours in spite of power failure. (Option)