LG AX5000 alltel Manual Del Usuario página 10

Welcome
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.
* TSB-74: Protocol between an IS-95A system and ANSI J-
STD-008
1xRTT system receives twice as many subscribers in the
wireless section as IS-95. Its battery life is twice as long as
IS-95. High-speed data transmission is also possible.
8
AX5000
CDMA
Designator
Standard
TIA/EIA-95A
TSB-74
Basic Air
ANSI J-STD-008
Interface
TIA/EIA-IS2000
ANSI TIA/EIA 553A
TIA/EIA/IS-634
TIA/EIA/IS/651
Network
TIA/EIA/IS-41-C
TIA/EIA/IS-124
TIA/EIA/IS-96-B
TIA/EIA/IS-99
TIA/EIA/IS-637
TIA/EIA/IS-657
Service
IS-801
TIA/EIA/IS-707-A
TIA/EIA/IS-97
TIA/EIA/IS-98
Performance
ANSI J-STD-018
ANSI J-STD-019
TIA/EIA/IS-125
Description
CDMA Tri-Mode Air Interface
14.4kbps radio link protocol and
inter-band operations
IS-95 adapted for PCS frequency
band
cdma2000 1xRTT AirInterface
Advanced Mobile Phone Service
MAS-BS
PCSC-RS
Intersystem operations
Nom-signaling data comm.
Speech CODEC
Async Data and Fax
Short message service
Packet Data
Position Determination
Service (gpsOne)
High Speed Packet Data
Cellular base station
Cellular mobile station
PCS personal station
PCS base station
Speech CODEC