Introducing the Compass 597 USB modem
Document 2130948. Rev 1.0 Jan.08
11
CDMA 3G services
The
Compass
USB
modem
operates
over
a
type
of
wireless
network
called
(Code
Division
Multiple
Access).
CDMA 3G
technology
provides
a
variety
of
connectivity
features,
depending
on
your
service
provider
and
account:
•
Rev.
A
supports
Internet
connections
with
data
rates
up
to
3.1
(downlink
from
the
network)
and
1.8 Mbps
(uplink
to
the
network).
Average
data
rates
are
450
‐
800
(downlink
from
the
network)
and
300
‐
400 Kbps
(uplink
to
the
network).
Actual
speed
depends
on
the
network
conditions.
•
Rev.
0
supports
Internet
connections
with
data
rates
up
to
2.4
(downlink
from
the
network)
and
153
(uplink
to
the
network).
Average
data
rates
are
400
‐
700 Kbps
(downlink
from
the
network)
and
40
‐
80 Kbps
(uplink
to
the
network).
Actual
speed
depends
on
the
network
conditions.
•
supports
Internet
connections
with
data
rates
up
to
153
Actual
speed
depends
on
the
network
condi
‐
tions.
Once
the
connection
is
established,
you
can
open
your
browser
and
connect
to
any
web
site
that
is
accessible
through
the
Internet,
or
access
other
Internet
services
(such
as
e
‐
mail).
The
connection
is
“active”
when
data
transmission
is
occurring.
If
data
transmission
stops
for
a
period
of
time
(determined
by
the
network),
the
connection
becomes
dormant.
•
Circuit
switched
(dial
‐
up)
data,
using
the
earlier
specification,
supports
data
connections
to
any
dial
‐
in
service
at
rates
up
to
14.4
.
•
QNC (Quick
Net
Connect)
provides
a
simplified
way
to
dial
into
an
Internet
connection
(using
circuit
switched
data)
where
3G
(1xEV
‐
DO
or
1X)
high
‐
speed
service
is
not
available.
•
(Short
Message
Service)
allows
you
to
send
and
receive
short
text
messages
using
the
Compass
USB
modem.
Summary of Contents for Compass 597
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