... 900M/1800M/850M/1900M digital mobile communication network.2. Support PSTN network, and switch the GSM ... Handset function: 1. 2.4 G digital wireless phone.2. Locking keypad.3. Calculating call duration.4. Adjusting the receiving ... be divided into sixteen category, including wireless telephone, GSM terminal, wireless network card, PBX related to GSM ... ISO 9001, CE, ROSH etc. 2.4G GSM fixed wireless phone