Microtel CellStat v.1.22 - Manual (Page 10)

MICROTEL CellStat
TM
8
Will the Dialer Call Me Back? Maybe. The dialer has a snooze timer. When an
alarm is acknowledged, the snooze timer is started, and alarm calls for all acknowledged
faults are suspended. If a channel is still in alarm after the snooze period ends, then the
dialer will begin a new alarm dialing sequence (starting with logging the event to the
email address, then calling the first number on the telephone list).
How does the Dialer Know Who to Call? The dialer has a System Telephone
Directory composed of up to 8 user-programmed telephone numbers. It also can store a
single email address. Each telephone number in the System Telephone Directory can be
up to 30 digits long, and can specify whether the call is placed over the hardwired
telephone line or via the built-in cellular module. Special ‘*’ control sequences may be
embedded within a user-programmed telephone number. These include tone/pulse
selection dialing, pauses, auto acknowledgment of an alarm call-out, dial '*' or '#' for
interfacing to telephone equipment, or to select the built-in cellular capability to make the
call or send a text message alert. These special sequences allow a tremendous amount of
flexibility on a telephone number by number basis. For example, one number may pulse
dial out on the hard-wired telephone connection, while the next may use the built-in
cellular module to transmit an SMS text message alert.
How does the Dialer Prioritize its Calls?
When the dialer detects a new alarm condition, it will search the telephone directory,
beginning with the first number on the list, for the first valid telephone number. The
dialer will then go off-hook (or use the built-in cellular communications if the phone
number has a *70 code indicating the dialer should dial out using the cellular interface)
and begin to dial the telephone number if the following conditions are true:
1. The Call Spacing Timer = 0, and the dialer has been on-hook for at least
the network recovery time (10 seconds).
2. The local telephone is on-hook (OFF HOOK LED is OFF).
3. The telephone line is operational (dial tone is detected), OR, if a cellular call,
there is sufficient balance in the cellular prepaid account to make a call.
During the dial out sequence, the dialer will implement all special control sequences
and/or call progress features embedded within the current telephone number. If the dialer
successfully connects with the called number, it will speak the alarm message for each
fault condition which exists.
On a voice callout, the dialer will repeat the alarm message five times after a call is
answered. While speaking the alarm message, the dialer simultaneously listens for a
touch-tone entered by the user at the remote phone. If it receives a valid tone, it will
terminate alarm reporting, and examine the tone received. If the user entered a ‘*’ key,
the dialer will accept it as an acknowledgment of the alarm condition. Any other keys
received will not acknowledge the alarm condition. The dialer will then indicate the
acknowledge status and prompt the user to enter a 2-digit access code.