Specification :

Basic Function
1. Supporing all frequencies of GSM
2. Switch call from GSM, PSTN and INTERNET.
3. Remoting user can free call anybody passing two routes among GSM, PSTN and INTERNET in gateway(optional).
4. VOIP applying functions: it can support call keeping, telephonist transfer, call waiting, unread SMS hint, avoidance of disturbance, three party service, different operators, hotline, alarm and call forwarding when busy line, no answering of the call, no condition.
5. Incoming call display.
6. Billing support.
7. Pre-set area code, IP number, Special service number and any other head numbers.
8. Privilege setting for international distant and local call-in and call-out.
9. Function of locking the SIM/RUIM card, terminal, network and district.
10. Supporting connecting PBX for group users.
11. Indicator for signal, power and busy line function.
12. VOIP can support: AGS, G165, RFC2833, FSK dialling directly, G711 fax, TOS, NAT dialling directly.
13. With battery storage (optional).
14 Supporting PC fax or G3 fax (optional).
15. Internet connection(optional).
16. Payment Management Function(optional).

Characteristics
1. Simple operation as normal fixed telephone.
2. Rapid network searching, quick response for dialing, high voice resolution quality and harmless low radiation.
3. Automatic identification of domestic, long and VOIP calls from call-out calls.
4. Support all the functions of ASTERISK. It can support automatic downloading of configuration, automatic detecting and updating the newest version.
5. Supporting voice encoding and decoding of G.711, G.723, G.729 as well as protocol of SIP, TCP/IP, RTCP,T.38, UDP, DHCP, DNS, FTP, RTP, PPPOE