Getting
Started
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11
2.4.6
GSM
CONNECTION
STATUS
Service
Type:
Determines
the
type
of
network
your
device
has
connected
to;
GPRS,
EDGE,
HSDPA,
HSUPA,
or
HSPA.
"Check
SIM"
will
be
displayed
if
the
SIM
is
invalid,
missing,
or
if
the
PIN
needs
to
be
entered.
MDN:
The
Mobile
Directory
Number
is
the
phone
number
assigned
to
the
SIM
card
supplied
by
the
carrier.
The
MDN
may
display
“NOT
AVAILABLE”
if
the
PIN
status
is
disabled
or
the
MDN
is
unknown.
IMEI:
The
International
Mobile
Equipment
Identity
is
a
unique
15
‐
digit
number
that
serves
as
the
serial
number
of
the
GSM
module
in
the
modem.
IMSI:
The
International
Mobile
Subscriber
Identity
is
a
unique
number
which
designates
the
subscriber.
This
number
is
used
for
provisioning
in
network
elements.
The
IMSI
may
display
“NOT
AVAILABLE”
if
a
SIM
card
is
not
detected.
Country:
Country
name
or
code
associated
with
the
GSM
network.
Carrier:
Cellular
provider
name
or
code.
Cell
ID:
Network
Identifier,
this
is
supplied
automatically
from
the
network.
Channel:
Cell
Site
channel
number
at
which
the
modem
is
connected
and
is
useful
for
the
carrier
in
the
event
of
troubleshooting.
Frequency:
Cellular
frequency
band
the
modem
is
using,
800MHz
and
1900MHz
are
mainly
in
the
US
and
outlying
areas.
In
some
cases
900
and
1800
will
be
seen
for
European
or
Foreign
carriers.
Roaming:
Options
are
either
Roaming
or
Not
Roaming.
Signal
Strength
(dBm):
Measured
in
dBm,
this
is
the
Received
Signal
Strength
Indicator
(RSSI).
Diagnostic:
If
this
number
is
less
than
128,
it
is
the
number
of
PPP
connections
made
since
the
last
reboot
of
the
modem.
If
this
number
is
128
or
more,
the
formula
128
‐
Diagnostic
value
equals
the
number
of
times
the
cellular
radio
module
has
been
reset.
