... in inbox and sentbox .Low-power design, connecting to outer power supply or using backup battery. Antijam well.USB port.camera ... phone.Shenzhen Taifeng Network Equipment Co., Ltd. is a manufacturer which specializes in producing GSM/CDMA fixed wireless phones and ... Asia, South Asia, the Middle East, South America, and Central America, and now we produce 200,000 sets per month. With ...