Basic Functions: 1. Supporting CDMA mobile network. 2. Supporting billing function. 3. Incoming call number display. 4. Pre-setting the local area code, IP number, Special service number and any other head numbers. 5. Privilege setting for international, domestic, and local calls etc. 6. Function of locking keyboard, telephone unit, network and district (optional). 7. Large LCD display of the operator information, signal strength, battery status, time and date. 8. Big memory of phone book to store the incoming and outgoing calls. 9. Supporting PC fax (optional); 10. Internet connection (optional). 11. SMS function (optional). 12. Network Management System (optional). Characteristics: 1. Simple operation as normal fixed telephone, good portability and mobility. 2. Rapid network searching, quick response for dialing, high voice resolution quality and harmless low radiation. 3. Adaptive to wide range of voltage with lower consumption. 4. Equipped with large capacity battery for back up when short of external power supply.