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8 UX5000
Welcome
Phone Service(AMPS).
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.
CDMA
Standard
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
MAS-BS
PCSC-RS
Intersystem operations
Nom-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 (gpsOne)
High Speed Packet Data
Network
Service
Performance
Designator Description