Service Manual

42
Emergency Feature
Operation
Whether the mobile is programmed for silent or non-silent alarm is
transparent to the VRS. However, the Emergency Alarm sequence
changes slightly between the silent and non-silent case. The main
differences are listed below:
1. The alarm exit sequence
For non-silent alarm, any of the following will cause the mobile
to exit Emergency:
• Extended keypress of the Emer button on the mobile’s
control head.
• Mobile microphone PTT or a portable-to-base repeat.
• Mobile exhausts its retries without receiving an “Emergency
ACK” from the base.
• The mobile receives an “Emergency ACK” from the base.
For silent Alarm, any of the following will cause the mobile to exit
Emergency:
• Extended keypress of the Emer button on the mobile’s
control head.
• Mobile mic PTT or a portable-to-base repeat.
2. The mobile will not unmute due to base traffic during silent
alarm, and therefore the priority VRS will not attempt a base-to-
portable repeat. If there are other, non priority VRS units in the
area, they will perform the base-to-portable repeat without
counting into priority.
IMPORTANT NOTE: While in Emergency, attempts to send a
message or status from the portable will
be ignored and WILL NOT cause the
mobile to exit Emergency.