Introducing the MP Modem
Rev 1.4 Apr.08
9
Account provisions
Your
account
may
restrict
usage
of
certain
networks
or
may
limit
your
connection
time
or
data
transmission.
Supported GSM radio frequencies
The
MP
modem
has
tri
‐
band
capability
on
HSUPA
and
UMTS
networks,
operating
on:
•
850
MHz
•
1900
MHz
•
2100
MHz
and
quad
‐
band
capability
on
EDGE
and
GPRS,
operating
on:
•
850
MHz
•
900
MHz
•
1800
MHz
•
1900
MHz
Connection methods
You
can
connect
the
MP
modem
to
a
USB,
Ethernet
(RJ45),
or
serial
(DB9)
port
on
a
computer.
When
connected
to
a
USB
or
Ethernet
port,
the
MP
modem
behaves
like
a
network
card.
When
connected
to
a
serial
port,
the
MP
modem
behaves
like
a
dial
‐
up
modem.
The
MP
modem
also
supports
connections
via
IEEE802.11b/g
(MP
881W
only).
See
for
more
details.
Virtual serial port
The
MP
modem
supports
four
virtual
serial
ports
(VSPs).
Three
are
reserved
for
internal
use
by
the
MP
modem.
The
remaining
VSP,
which
is
called
Sierra
Wireless
Application
Interface
2,
is
assigned
to
a
specific
COM
port
that
varies
between
users.
This
VSP
can
be
used,
for
example,
to
send
AT
commands,
or
to
run
applications
such
as
HyperTerminal
®
.
Special
MP
modem
modes
such
as
GPS
that
are
supported
on
a
serial
port
are
also
available
on
the
virtual
port.
For
example,
with
the
virtual
port
enabled,
a
mapping
application
on
your
computer
that
normally
listens
for
GPS
messages
on
a
serial
port
listens
for
those
same
messages
on
the
virtual
port.
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