Features: 1) Based on mobile GSM network that collects all the functions of both common fixed telephone and mobile phone. 2) Mainly aims at users of office and business affairs. It can be used as office telephone in remote and rural areas, some areas where are inconvenient or difficult to lay fixed wires, temporary places such as big assembly, exhibition, and moving carrier like vehicles, vessels, and railway station. 3) Provides a new competition means and guarantee for mobile operator to enter PSTN fixed telephone market. 4) Embedded GSM900/1800MHz wireless communication module. 5) Adopts 131*64 big LCD, has sensitive receiving radio, strong signal and quality voice transmission so that can provide clearer and more natural voice. 6) Possesses the same appearance and operations as ordinary telephone, and also has the same strong functions as mobile phone, such as calling records, menu, phone book, and short messages. 7) Has compact pattern, favorable user interface, exquisite outside appearance and convenient operations. Main Functions & Characteristics: 1)Suitable for 900/1800 MHz public mobile GSM network, using SIM card. 2)Can dial international, national, local and GSM calls. 3)Caller ID. 4)131*64 big LCD display with adjustable contrast of 8 grades, which can show signal intensity, time, date, calendar, talking time, battery consumption, new message, startups of alarm, call divert and handsfree communication and mistakes (operation mistake or install SIM card by mistake). 5)LCD back light drive and dial-up keyboard illumination that is convenient to use at night. 6)Calling record function that can store 20 groups of missed calls, received calls and 100 groups dialed calls automatically. Can proceed with the operations of view numbers, editing messages, store and delete. 7)Support the functions of redialing and handsfree. 8)Support English input by capital letters, small letters, and digits. 9)Short messages function that supports short messages editing, storing, group sending, forwarding, deleting and text answering. 10)Possess 21 sweet music ringing tones, 5 levels of volume are adjustable. 11)Key tones function when in the state of on-hook. 12)There are dialing tone and busy tone when taking up the handset. 13)Functions of call divert, call waiting and call barring. 14)Functions of adding IP numbers and area code automatically. 15)Function of locking the network. 16)Function of phone and card mutual locked.