Product Highlight: 1. Fax jack (RJ11) for G3 fax operation 2. Supports standard GSM SIM (Subscriber Identification Module) 3. Able to lock onto a specified GSM carrier and service area is programmable 4. Support SIM card locking (terminal refuses to take any other SIM card except the one set to be accepted) 5. Single jack (RJ11) for telephone operation 6. Automatic end-of-dialing (SEND key not required) 7. Designed for low power consumption and support Li-ion batter and external DC adapter 8. Powerful encryption to ensure high security of data 9. Capable to retain operational parameters and data upon power breakdown 10. Provided with super password to access engineering mode for senior configuration 11. Support down loading parameter setting on the configuration program with a data cable 12. Support PC FAX (by win fax or net fax) 13. Support GPRS data transmitting class 10(up to 85. 6kbps) 14. Support interface RS232 15. Support backup battery unit (option) 16. Easy to set up and maintain