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TECHNICAL DETAILS
TECHNICAL DETAILS
CDMA Standard
Basic Air
Interface
TIA/EIA/IS-95A/B/C
TSB-74
ANSI J-STD-008
TIA/EIA-IS2000
CDMA Trimode Air Interface
14.4kbps radio link protocol and
inter-band operations
IS-95 adapted for PCS frequency
band CDMA2000 1xRTT Air
Interface
MAS-BS
PCSC-RS
Intersystem operations
Non-signaling data comm.
Cellular base station
Cellular mobile station
PCS personal station
PCS base station
Speech CODEC
TIA/EIA/IS-634
TIA/EIA/IS/651
TIA/EIA/IS-41-C
TIA/EIA/IS-124
TIA/EIA/IS-97
TIA/EIA/IS-98
ANSI J-STD-018
ANSI J-STD-019
TIA/EIA/IS-125
TIA/EIA/IS-96-B
TIA/EIA/IS-99
TIA/EIA/IS-637
TIA/EIA/IS-657
IS-801
TIA/EIA/IS-707-A
Speech CODEC
Async Data and Fax
Short message service
Packet Data
Position Determination Service
High Speed Packet Data
Network
Service
Performance
Designator Description
Technical Details
The LG 490 is a trimode 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.
The LG 490 also works on Advanced Mobile Phone
Service (Amps). Since this phone operates on these
three Wireless networks the call fail rate is less than on a
conventional dual-mode or single-mode phone.
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).
* 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.
The following table lists some major CDMA standards.
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