タイトルまたは説明

Main Functions: 1 GSM Voice Communication, Choose any position on users’ own to enhance signal intensity via short or long Tel-line 2. Provide feedback signal for payphone, able to connect Toll Set for payment count 3. Able to connect regular fixed telephone or cordless phone, easy installation 4. Support Mini-PABX to connect with GSM 5. Hide caller Id 6. External backup batteries supporting 4 hours talking and *4 hours stand-b , easyinstallation, able to connect power supply for intelligently charging 7. Lock SIM card in software and hardware 8. Support internet function (to connect with computer ) 9. Prefix IP number auto-dialing *0. Supporting calls forbiddance for incoming and dialing *1. The other regular phone's functions, such as "call records" ***** be met by connecting to a regular phone *2. New module with good quality and steady performance *3. Using professional wireless module *4. Internal or external antenna *5. Support three party talking, three parties can talk in the same time. *6. Can send SMS by computer.