... . 3.Supporting SMS function. Basic Functions: 1. Supporting GSM-900M/1800M/850M/1900M digital mobile communication network.2. Support ... dialed calls . Handset function: 1. 2.4 G digital wireless phone.2. Locking keypad.3. Calculating call duration.4. ... can be divided into sixteen category, including wireless telephone, GSM terminal, wireless network card, PBX related to GSM, CDMA, TD-SCDM, WCDMA.Now, ...