Detailed Product Description

Main Features
1.Supply 4 phone lines in GSM Wireless mode guaranteed by industrial-level GSM module
2.SIM card locking to the terminal/to the network or interlocking between SIM card and the terminal
3.Caller ID available
4.Reverse Polarity charging signal supporting
5.LED Indicators for power, network in-use, etc.
6.Hot numbers, speed dial numbers and barring numbers programmable
7.Transmitting/receiving volume adjustable
8.IP headers programmable
9.Durable and compact design for 1U 19" rack mount
10.Echo cancellation/ noise reduction; call quality as landline phones
11.12AH back-up battery as optional summary

Technical specification
GSM Frequency: 900/1800MHz or 850/1900MHz
CDMA Frequency: 450 or 800 or 1900MHz
Carrier spacing: 200KHz Maximum Frequency
Deviation: +/- 0.1 ppm
Receiving Sensitivity: -105 dBm Phase Error: < 5RMS
SIM Card: MIni-SIM Card compatible
Antenna Connector: SMA type female
Shell Material: 1mm electrolyzed board
RJ11 Telephone Interface
Dialing Tone Frequency: 468Hz
Ring Current Frequency: 25Hz
Ring Current Voltage: 75V
Feeding Voltage: -48V
Antenna: 
Frequency Bandwidth: 45MHz
Voltage Standing Wave Ratio: < 1.5
Gain: 3~7dB or higher Gain Antenna available
Polarization Mode: Vertical Polarization
Power Suuply: AC220V
DC voltage: 12V/DC
Current Rating: 3A