Triton 97XX Series Operation Manual - Manual (Page 193)

TRITON SYSTEMS, INC.
SECTION 5 - MANAGEMENT FUNCTIONS O
PERATION
M
ANUAL
- M
ODEL
97XX-Series
5-138
Terminal is Turned Off or Power Has Failed
If the terminal is turned off, no calls will be made. While an obvious
point, it means that for this feature to be of any value, the terminal
must always remain on.
Communications System Has Failed
A failure of any piece of the communications system will result in
missed calls. This includes the terminal modem, the phone line to
the terminal, and any intermediate telecommunications providers.
Terminal Was Reset or Power Cycled
Since the interval timer is reset when the terminal is reset, a sched-
uled call may not occur at the expected time.
To realize the benefits of the Heartbeat Message, the host must be
programmed to monitor the interval between calls from the termi-
nal. It is important to note, though, that the host interval threshold
should be set to a value greater than that programmed at the ter-
minal. A practical guideline is at least twice the terminal interval.
This allows for Heartbeat Message calls that are delayed because
the terminal is in Management mode, or calls skipped because of
a system reset.
E RROR C ONDITIONS :
There are no error conditions directly associated with this function.