LG AX5450 User Guide - Page 14

AX5450 Technical Details TheAX5450 is a dual-band phone that operates on both Code Division Multiple Access (CDMA) frequencies: cellular services at 800 MHz, and Personal Communication Services (PCS) at 1.9 Ghz. CDMA technology uses a feature called DSSS (Direct Sequence Spread Spectrum) that enables the phone to keep communication from being crossed and to use one frequency channel by multiple users in the same specific area. This results in a 10-fold capacity increase when compared with analog mode. In addition, features such as soft / softer handoff, hard Handoff, and dynamic RF power control technologies combine to reduce call interruptions. The Cellular and PCS CDMA networks consist of MSO (Mobile Switching Office), BSC (Base Station Controller), BTS (Base station Transmission System), and MS (Mobile Station). The following table lists some major CDMA standards. 26 AX5450 CDMA Standard Designator Description Basic Air Interface TIA/EIA-95A TSB-74 ANSI J-STD-008 TIA/EIA-IS2000 CDMA Dual-Mode Air Interface 14.4kbps radio link protocol and inter-band operations IS-95 adapted for PCS frequency band cdma2000 1xRTT Air Interface Network TIA/EIA/IS-634 TIA/EIA/IS/651 TIA/EIA/IS-41-C TIA/EIA/IS-124 MAS-BS PCSC-RS Intersystem operations Nom-signaling data comm. Service Performance TIA/EIA/IS-96-B TIA/EIA/IS-99 TIA/EIA/IS-637 TIA/EIA/IS-657 IS-801 Speech CODEC Assign data and fax Short message service Packet data Position Determination Service (gpsOne) TIA/EIA/IS-97 TIA/EIA/IS-98 ANSI J-STD-018 ANSI J-STD-019 TIA/EIA/IS-125 Cellular base station Cellular mobile station PCS personal station PCS base station Speech CODEC * TSB -74: Protocol between an IS-95A system and ANSI JSTD-008 1xRTT system receives twice as many subscribers in the wireless section as IS-95. Its battery life is twice as long as IS95. High-speed data transmission is also possible. 27 GETTING STARTED