Installation guide

LMU Users Guide

V1.0.6 December 10 2009

- 70 - CalAmp Proprietary & Confidential

The DNS look-up occurs every time the LMU successfully connects to the network

or 15s after a Parameter update.

The initial configuration of the LMU’s Inbound settings is generally handled by AT

Command. The first step is to program the Inbound IP address and Port using:

AT$APP INBOUND <IP address> <port>

The second step is to program the Inbound URL:

AT$APP Param 2319,0,”<url>”

It is very important that you program the URL as well as the Inbound IP address and Port.

Not setting the URL value may change the Inbound IP Address to something you are not

expecting. If you are not using a URL it is best to set this field to a null value. That is:

AT$APP Param 2319,0,””

For example, say your inbound IP address is 192.168.0.1 and you have a URL of

lmu.myDomain.com. The two commands you would use to configure the Inbound settings

are:

AT$APP INBOUND 192.168.0.1 20500

AT$APP PARAM 2319,0,”lmu.MyDomain.com”

Out of the factory, the LMU will have the Inbound settings configured to an IP of 0.0.0.0

and an empty URL. The port should be 20500.

Only the LMU-4100™ and LMU-2500™ use the Inbound IP Address values. The other

devices all use the Inbound URL.

10.2.1 Message Logging

When it comes to logging, there are three reporting modes that can be used with the LMU.

They are commonly referred to as the following:

• Store and Forward (SNF): When a message is created using Store and Forward the

LMU will attempt to immediately send the data if the network is available and if no

other data is in the log. Once the message is sent, the LMU will wait for an

Acknowledgement message from the receiving server. If one is not received, the

LMU will log the data. Any logged data will be sent at a later point in time. If the

LMU is either not online, or the log is already active, the new data is placed at the

end of the log.

In PEG, the phrases SEND or SEND-LOG indicate a message is created using the

Store and Forward mechanism.

• Batch: In batch mode the LMU will immediately place the data in the log regardless

of network and log states. The LMU will hold this data until it is explicitly told to