fixed terminal
1PSTN+1GSM
Support polarity reversal signal
Support extended accumulator battery
fixed terminal 1PSTN+1GSM
Features
Simple to install / easy to maintain. Easy access to GSM networks
High sensitivity quad band industrial module for clear voice quality
Provide up to 30mA output current for payphone connection
2 SIM cards (SIM 1 + SIM 2), 3 standby channels (GSM A + GSM B + PSTN)
5 working modes can be selected or programmed (GSM A/B auto switch, PSTN only, GSM/PSTN
auto switch, GSM A only, GSM B only)
White backlight LCD for parameters and information display
Least Cost Routing, GSM prefix number can be programmed
Auto-prefix of Local area code (programmable)
Caller ID display/hiding can be set
Support polarity reversal signal for GSM metering
Provide RMS (remote management system) for great convenient maintenance (optional)
Provide menu list and 4 keys to set parameters and browse calling records
Network locking / BTS locking / SIM card PIN locking facility
Support extended accumulator battery for redundancy power supply
Power supply
AC Input voltage: 160V to 280V
Power adaptor output: DC7.5V / 1.5A
Backup battery: 6V / 4AH Lead-Acid battery (Optional accessory)
Maximum charge current: 600 mA
DC input voltage range: 7.5V to 10V DC
Maximum DC current: 700 mA (DC7.5V. external charge current)
Working environment
Working temperature: 0 to +45 ∩
Relative humidity: 10% to 95%
Environment noise: <60dB (A)
Atmospheric pressure: 86 to 106 KPa
GSM parameters
Frequency bands:
GSM 850MHz, GSM 900MHz, GSM 1800MHz (7 kinds)
GSM 1900MHz, GSM 850/1900MHz,
GSM 900/1800MHz, GSM 900/1900MHz
Frequency stability: < 2.5 ppm
Receive sensitivity: < -100 dBm
Transmit power: < 2W (850/900 MHz), < 1W (1800/1900 MHz)
SIM card mode: 3.3 V
Antenna impedance: 50 Ohm
Antenna
Gain:
2.5dBi (omni directional) with 3 M (11.8US in.) wire
5dBi whip antenna is optional
7dBi Yagi antenna is optional
