Installation
EST3 Installation and Service Manual 5.33
SIA P3 (4/2):
numeric messages that contain two numbers and
no other parameters. The format is:
EventCode
TAP: consists of two fields separated by a carriage return (CR).
The first field is the User ID. The second field is the text
message that will be displayed on an alphanumeric pager.
Message length, including User ID and CR is 60 characters. The
format is:
User [CR] Message [Location]
No standards describe the content of the message. Typically,
you'll use the device location message, as displayed on the LCD
module. Check with your paging service provider to ensure they
accept the TAP protocol and determine any message limitations.
Transmission process
The 3-MODCOM includes features that provide an appreciable
level of transmission integrity. Multiple telephone lines and
multiple telephone numbers help to ensure that a call to the
receiver gets through. The 3-MODCOM module sequences
through the following basic steps to contact the central
monitoring station receiver.
1. The 3-MODCOM seizes one of the telephone lines and puts
the line on-hook for a minimum of three seconds.
This cuts off any ongoing call and disconnects the line from
any telephone or dialing devices that are connected
downstream.
Note: The module tries to select an unused line for its first
two attempts.
2. The 3-MODCOM takes the line off-hook and waits for a dial
tone.
LED DS1 or DS2 lights steadily.
If a dial tone is not received by the configured time, the
module goes on-hook, increments the attempt counter, and
continues to alternate lines and numbers until a dial tone is
acquired.
If the 3-MODCOM is configured with two telephone
numbers and only one telephone line, it will make four
attempts using the first telephone number, then four attempts
using the second telephone number. This alternation of
telephone numbers continues as needed until a connection is
made or the configured number of dial attempts have been
made.
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