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.DTRHIGH and
.DTRLOW
or
.DTRHIGH.n and .DTRLOW.n internal events
where n = host port number
The .DTRLOW event occurs automatically on the high to low transition of the DTR signal on a Host port. The .n indicates the port number. This may be caused by a cable being removed from a port or by the attached equipment being switched off.
The .DTRHIGH event occurs automatically on the low to high transition of this same signal. This can be caused by attaching a cable to a port. These events can be used to detect if the HP server or host has lost power, or if the Terminal server has been disconnected from the maintenance port.
Alarm/Event | Action Routine | Parameters | Comments |
.DTRLOW | SCHEDULE | 2 PHONHOME |
|
.DTRHIGH | CANCEL | .DTRLOW |
|
This example schedules a PHONHOME to report the alarm two minutes after DTR is lost (transitions from high to low). If DTR is
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