Siera Wireless MP555, Руководство по установке программного обеспечения

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Rev 1.2 Jan.05 39
6 6: Sending Data to your Network
Application
•
•
/
data to a server
AT!MPMTCONF
AT!MPMTCONF
.
Configuring the
modem to route data
to a server
Retrieving the Unique
Mobile Device ID
This chapter discusses how to configure the MP 555 GPS
modem to send GPS and I O data to a network server. This is a
simple process that uses a single AT command. If, however,
there are any firewalls on your or your service provider’s
network, provision must be made to route the data through or
around the firewall. A general discussion of some methods of
dealing with firewalls is provided.
This chapter also explains how to retrieve the Unique Mobile
Device ID from the modem. This is the number that uniquely
identifies each modem. Any application that uses the GPS and
I/O data from the modem requires this number.
Configuring the modem to route
The protocol that defines how the MP 555 GPS data is
packaged is called MTP (Monitoring and Tracking Protocol).
This protocol is explained in detail in the next chapter. MTP is
configured using the AT command
. In issuing
this command, you specify the IP address and port number to
which the MTP data is to be sent, and values for the timers that
determine the frequency with which the data is to be sent.
These timers are discussed in the next section.
The MP 555 GPS modem provides four independent reporting
engines, allowing data to be sent to four different destinations.
This allows, for example, GPS data to be sent to one host appli­
cation, and I/O data to be sent to another. You must configure
each engine that you intend to use separately using
Report frequency timers
The low rate timer, fast rate timer, and GPS timer control the
interval between reports from the modem. The low rate timer
sets the interval at which reports are sent in the absence of any
other trigger or timer. The low rate timer is in minutes with a