Installation guide

LMU Users Guide

V1.0.6 December 10 2009

- 55 - CalAmp Proprietary & Confidential

The LMU has a variety of security features that will limit access to various functions within

the LMU. It is very important that you do not change any of the default settings for these

features until you fully understand the implications of doing so.

Controlling LMU Access

8.1

The Service Enables Parameter allows a user to enable or disable various features of the

LMU. The following four items are controlled by this parameter:

Service Enables

• TAIP Interface

This feature controls the LMU’s ability to create and respond to TAIP messages.

• Inbound/User Messaging

This feature controls the LMU’s ability to create and process User Messages from

MDTs, either on the Host Port or Aux Pot.

• Event Reporting

This feature controls the LMU’s ability to generate Event Reports, either via PEG or

via AT Command. Keep in mind that the rest of the PEG Script would still be

operational.

• PEG Processing

This feature allows users to turn the processing of the PEG Script on or off.

The Service Enables are controlled by Parameter 1025. Like many of the LMU’s Parameters,

the Service Enables are bit mapped. If a bit is set, then the associated feature is enabled. If a

bit is cleared, then the feature is disabled. By default, PEG Processing, Event Reports and

Inbound/User Messaging are enabled. Only the TAIP interface is disabled. The feature bit

mapping is as follows:

• Bit 3 = TAIP Interface

• Bit 2 = Inbound Messaging

• Bit 1 = Event Reports

• Bit 0 = PEG Processing

To enable all the features you would use the following commands:

TAIP Interface:

AT$APP PARAM 1025,0,8,8

Inbound Messaging:

AT$APP PARAM 1025,0,4,4

Event Reporting:

AT$APP PARAM 1025,0,2,2

PEG Processing: