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Chapter 11 - Programming Data Alarms
SNMP Access Gateway User’s Manual - v1.0 -- 11/99 - Page 41
Chapter 11 - Programming Data Alarms
Data Alarms (or Alarm Formulas) are formulas set up to define what record(s) constitute an alarm condition. Alarm
Formulas can be defined to activate upon the receipt of a single record, or only after X number of matching records
have been received within X duration.
A Data Alarm defines a record pattern to watch for in incoming data received by the SNMP Access Gateway. A
good example of a data alarm would be to watch PBX SMDR records for any call with 900 in the area code or 976
in the prefix. When the SNMP Access Gateway receives an a matching record, the assigned action(s) for that alarm
can be taken.
11.1 - Alarms are the same as Events
An ‘Event’ is an occurrence which the SNMP is designed to monitor and log, and on which in some cases a
notification action occurs. The word Event is used in some places in the manual and in other places the word Alarm
is used. Some circumstances which are Events are not strictly speaking Alarms. For example, an SNMP Access
Gateway reboot occurrence is logged in the Events Log. However, in most cases the terms Event and Alarm can be
used interchangeably.
11.2 - Alarm Actions
The SNMP Access Gateway supports the definition of up to 8 pager definitions and up to 8 SNMP Managers for trap
addresses, plus 2 Buzzer tones. Each of these is considered an ‘Action’ for a total of 18 possible actions which can
be assigned to any individual alarm event. For example, one single Toll-Fraud alarm (someone made a call to 976-
GIRL) can be set to call 6 pagers and send Data Alarm traps to 3 SNMP Managers, and to beep the SNMP Access
Gateway beeper also.
11.3 - How Data Alarms Are Set Up
All settings of the SNMP Access Gateway can be entered manually using a terminal connected to the SNMP Access
Gateway, with the exception of Data Alarms . Data Alarms are written into a text file as defined below and then
uploaded into the SNMP Access Gateway. Two methods are provided to upload an alarm file to the SNMP Access
Gateway.
Once a file has been created in accordance with the guidelines below, it can be uploaded into the SNMP Access
Gateway over a modem using an Xmodem Protocol by selecting the Upload a New Alarm File found under Event
Definitions, or by using FTP over the TCP/IP connection, as further explained in the section Using FTP.
This same alarm file, once uploaded, can be viewed using the View Alarm File option found under Event Definitions
in the Setup Menu.
11.4 - Defining Data Alarms
The SNMP Access Gateway has a setup within the uploadable text file which looks similar to Windows INI file. In
this text file the field names and positions to be used in the alarm formulas are defined. Once fields are defined, the
alarm formulas and parameters for each alarm are individually defined. A sample alarm text file is shown below:
[fields]
outext=12,6
inext=18,6
outtrunk=18,7
intrunk=12,7
date=38,5
time=44,5
duration=50,8
phone=63,7
onefield=63,1
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