1. Connection interface : SIM Card2. Making & answering calls after connecting to telephone set
3.With 2 RJ-11 phone ports
4. Available to connect with telephone set, PBX, billing machine, etc
5. Available to connect with backup battery (optional)
6. Built-in PIN code protection featured with locking device/card/network
7. Optional to match with various high-gain antennas, featured with signal intensity indicator, Working
status indicator, breakdown indicator, etc
8. Supports the functions of redialing and hands-free
9. Can proceed with setting up and modification of parameters through the phone set.Technique Parameters:
Working Frequency: GSM 850/900/1800MHz/1900MHz
Working Voltage: DC12V
User Access Port:
Dialing tone frequency: 450Hz continued
Busy tone frequency: 450Hz 0.35s/0.35s