TT-886T GSM Coin & Card Payphone TT-886T GSM outdoor coin & card payphone uses Siemens high quality 900/1800MHz dual band or 900/1800/1900MHz triple band GSM module, providing instant and reliable wireless deployment & communication. TT-886T basically is the same as TT-886 but with more stylish housing design. It supports ISO 7816 IC card Standard and maximum 4 SAMs for card authentication. It can distinguish 8 to 15 kinds of different coins by detecting coin's diameter, thickness and material. Connected with remote Payphone Management System (PMS), a full range of payphone management & report facilities could be easily achieved. The main product features are described as below. Feature ?Using high-quality GSM module for 850/900/1800/1900MHz (option) network ?Robust SPCC steel housing to guard against vandalism ?Armored cord handset ?128 x 64 dots large LCD with backlight can display various messages and advertisement information ?Multiple languages (option) ?Modulized design for easy maintenance ?4 special buttons for customized application and volume adjustment ?Accommodate maximum 4 SAMs for card authentication ?Coin validator can reject unwanted and fake coins ?Normal call, Emergency call, Service call, Incoming call, Following-on, redial ?Self-diagnosis ?Remote tariff change ?Supports SMS function (option) ?Automatic PIN entry for SIM card authentication on power reset ?With flash memory, can be easily upgraded ?Remote management via PMS ?Coin recognized by material, diameter, thickness, shape ?Usable coin: - Diameter: 15~31mm - Thickness: 1.2~3.0mm ?Coin slot: - Storage capacity: 7 coins - Smart coin refund - Can distinguish 8 kinds of coins ?Cashbox: - Self-locking, Auto reset - Capacity: 2.2 liters