1.  Supporting GSM 850/900/1800/1900MHz
2.  Could make local call, mobile call, national and international calls.
3.  Pre-set area code, IP number, Special service number, and any other head number.
4.  Privilege setting for international distant and local call-in and call-out.
5.  PIN  code protection for SIM card.
6.  Supporting SIM lock and network lock
7.  Indicator for signal, power and in-use function.
8.  Supporting reverse Polarity function
9.  With bank-up battery storage.
10.  USB port to connect PC.
11.  Two RJ11 ports can connect two extension at the same time, supporting caller ID.
12.  Large LCD display of the operator information, caller ID, signal strength, battery status, time and date.
13.  GPRS
14.  Support Both GSM and PSTN
15       PSTN forwarding GSM
16.  Using industrial module

Technical Specification

Air Interface GSM Phase 1 / GSM Phase 11 + Compatible
GSM Frequency: GSM 850/900/1800/1900MHz
RF Transmit Power: 2W(900MHZ). 1 W ( 1800MHZ)
RF Sensitivity: <-100dBm
Electricity: Power Supply:
Input: AC 100-240V/60HZ; Out put: DC 5V/1000mA
Connectors:
RJ-11 Interface Jack for telephone
USB Interface Jack for PC
SMA Antenna connector
DC Power input Jack

Antenna:

2.5dbi magnet 5 meters cable

ENVIRONMENT
Environmental Temperature: -10~40
Humidity: 10~9
Atmospheric Pressure: 86 106kpa
Power consumption: Static ≤30 mA
Standby Time: More than 36H
Talk Time: 2H
(Annotation: The standby time and the talk time are according to the local network. )