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System Features; About Alarmnet-I Internet Application; Encryption; Modes Of Operation - Honeywell AlarmNet IGSMHS Installation And Setup Manual

Internet communication module
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IGSMHS Installation and Setup Guide

System Features

Basic features include:

About AlarmNet-i Internet Application

AlarmNet-i is a fully encrypted, secure method of delivering alarm messages from a
protected premise to an AlarmNet equipped central station. An Internet Communicator
Module transmits status, supervisory, and alarm messages to the AlarmNet Control Center
using a broadband Internet connection.
The AlarmNet Control Center identifies, validates, and forwards the messages to the
appropriate AlarmNet central station. AlarmNet-i has an unlimited account capacity.


The IGSMHS supports private key encryption. Private Key encryption means that both the
sender and the receiver know the KEY used to encrypt the data. Each communication
module produced by Honeywell is loaded with a globally unique identifier called a MAC
number, and a large random number or KEY. This KEY and MAC number are also stored in
the AlarmNet servers. When a communication module contacts AlarmNet, it sends the MAC
number in the clear followed by the message that is encrypted using the KEY data. The
server looks up its copy of the KEY based on the MAC number and uses that KEY to decrypt
the message.
The IGSMHS uses 256 bit AES (Rijndael) encryption (which is required for certain
government installations). The AlarmNet-i AES Encryption Software Module Version 1.0
contained in the Honeywell products has NIST approval. Listings for this approval can be
found at

Modes of Operation

The IGSMHS provides four modes of operation so it can be used with various types of control
panels, as summarized below.

ECP Mode

 This mode is for use with Honeywell control panels that support ECP communication
 The module connects to the control panel's keypad terminals and provides 2-way
communication with the control panel using ECP messaging
 The control panel treats the IGSMHS as a communications module (LRR), so program the
control panel accordingly, including setting the module's proper LRR device address
 Reports are sent in Contact ID format
 The module also supports two hardwire zone trigger inputs (zones 6 and 7)
Options include; V+, V–, EOL, inverted, and non-inverted.
Supports dynamic or static IP addressing, and installs behind firewalls without
compromising network security.
Quick connection to compatible Honeywell series control panels
Simple programming using a 7720P programming tool
Reports fire (Fire has not been evaluated by UL), burg, and status messages via the
Reports messages via AlarmNet-G as backup to Internet reporting
Allows uploading and downloading of control panel data over the Internet. Certification number
The IP and GSM signaling paths are suitable for encrypted line security when programmed
for 1 minute IP/GSM Fault Times. The system configurations are not suitable as a Dual Line
Signal transmission system.
Only ECP Mode and Zone Trigger modes have been approved for UL installations.



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