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LX5550
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LX5550
Important Information
This user’s guide provides important information
on the use and operation of your phone. Please
read all the information carefully prior to using the
phone for the best performance and to prevent any
damage to or misuse of the phone. Any
unapproved changes or modifications will void
your warranty.
FCC Part 15 Class B Compliance
This device and its accessories comply with part 15
of FCC rules. Operation is subject to the following
two conditions: (1) This device and its accessories
may not cause harmful interference, and (2) this
device and its accessories must accept any
interference received, including interference that
causes undesired operation.
Technical Details
The LX5550 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.
* 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 1xRTTAir Interface
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
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
Network
Service
Performance
Designator Description
LX5550(E)-USC.QXD 04/2/26 10:16 AM Page 10