AirLink MP595 / MP595W Modem User Guide
10
2130795
The
MP
modem
also
supports
connections
via
IEEE802.11b/g
(MP595).
See
Chapter
6
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.
The
MP
modem
VSPs
are
available
on
both
USB
and
Ethernet
interfaces.
For
information
on
enabling
a
virtual
serial
port,
see
the
MP
3G
Modems
AT
Command
Reference
manual
(document
#2130810).
VPN support for RNAP
This
feature
allows
for
the
exchange
of
Remote
Network
Access
Protocol
(RNAP
1
)
data
between
the
MP
modem
and
a
remote
server
accessible
only
through
a
Virtual
Private
Network
(VPN)
connection.
When
using
this
feature,
you
must
have
3G
Watcher
running
on
the
computer.
The
MP
modem
sends
RNAP
data
over
Ethernet
or
USB
to
3G
Watcher
on
the
computer.
3G
Watcher
places
the
RNAP
data
in
a
User
Datagram
Protocol/Internet
Protocol
(UDP/IP)
packet
and
sends
it
over
the
VPN
connection
to
the
server.
When
3G
Watcher
receives
a
UDP/IP
packet
containing
RNAP
data
over
the
VPN
connection,
it
disassembles
the
packet
and
sends
the
RNAP
data
to
the
MP
modem.
You
can
enable
this
option
using
3G
Watcher
software
or
AT
commands.
See
the
3G
Watcher
online
help
and
the
MP
3G
Modems
AT
Command
Reference
manual
(document
#2130810)
for
details.
1. RNAP is a Sierra Wireless proprietary protocol that encapsu-
lates the MTP data that is sent to and from the MP modem. It
ensures that both the MP modem and remote host recognize
the data packets. See
The Monitoring and Tracking Protocol
Guide
on
page 12.
Summary of Contents for AirLink 595W
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