Features
Phone numbers
A total of 9 phone numbers can be called. 4 phone numbers are assigned to each of the 2
inputs. In addition, a special phone number can be programmed by the user to provide a total
of 9 phone numbers. The special user phone number is called when either input is activated.
Calling sequence
When an input is activated, it calls the 4 phone numbers assigned to that input plus the
phone number assigned by the user, if programmed. Input 1 has priority over input 2. If
the system is currently sending input 2 messages, and input 1 triggers, it starts the calling
sequence for message 1. When it finishes calling all the numbers assigned to input 1, it
resumes with the calling sequence for input 2 from the point it was interrupted.
When an input is triggered, the line seizure relay is activated. This drops all the house
phones from the line so the alarm messages will not be interrupted by someone picking
up a phone. It then goes on hook for 2 seconds to release the line in case someone had
been using a house phone. This will release the line if the interrupted call originated at this
location. It then goes off hook and waits for a dial tone.
If there is no dial tone after 10 seconds, it either answered an incoming call or interrupted
a call which had been answered by a house phone. It goes on hook again, but longer this
time. After waiting onhook, it goes off hook again and waits for the dial tone. If no dial tone
is detected, it goes back on hook and waits again. The wait onhook is progressively
increased on each attempt to a maximum of 48 seconds. It continues to try until a dial tone
is detected. If blind dialing is selected, it dials after 10 seconds even if it does not detect a
dial tone.
In some telephone exchanges, a busy signal can occur while waiting for the dial tone if all
lines are engaged. The communicator ignores the busy signal so after the prescribed wait
without a dial tone, it hangs up and tries again as described in the previous paragraph.
After the phone number is dialed, it waits for a response. If a busy signal is detected, it
hangs up and tries the next number.
When a ringing signal is detected, it sends 2 short beeps every second to alert the person
who answers that a message will follow. When the ringing tones cease, the message is
sent. If the ringing signal continues for 60 seconds, it hangs up and tries the next number.
If the line is busy, or the phone is not answered, that phone number will be tried again after
the other phone numbers are called. If the call to a number cannot be completed after 5
attempts, it will not attempt to call that number again (for this alarm). However, the next
time the system is triggered, it will try all phone numbers.
If tone detection is disabled, it ignores the ringing and busy signals. After the phone is
dialed, it starts generating the alerting beeps. After 5 seconds, it sends the message. The
number of times the message repeats can be programmed by the installer.
2 Informa 300 Voice Message Communicator
