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11
LX5550
10
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
1xRTT
Air
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
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