Alert Tones; All Applications; Edacs Applications - Ericsson EDACS MDX Operator's Manual

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The EDACS MDX radio generates a set of unique alert tones to indicate
operating status. The following section identifies and describes the alert tones
used in the MDX radio for Conventional, GE-MARC, and EDACS
applications.

ALL APPLICATIONS

SELF CHECK
TEST ALERT

EDACS APPLICATIONS

CALL
ORIGINATE
ALERT
AUTOKEY
OUT OF RANGE/
SYSTEM
INOPERATIVE
16
Displayed when an individual call has been re-
ceived and not answered. By selecting Special Call
in menu mode, the call can be recalled for return at
a later time. (Note: The call is not saved through
a power cycle.)
Displayed when an active voice call on a trunked
system is in an emergency state.

ALERT TONES

One beep is sounded after the radio is turned on to
indicate that the radio has passed the self diagnostic
test. Optional in PC programmer.
If programmed, a short tone is sounded whenever
the Push-To-Talk (PTT) button is keyed and the
radio has acquired a channel. This tone indicates
the user may begin communications.
When the PTT is keyed to place a call on the
system, but the PTT is released before getting to
the channel (e.g. a queued call), the radio automat-
ically keys on the channel when it gets the assign-
ment. The radio generates a long beep and holds
the transmitter keyed for two seconds. Pressing the
PTT button keeps the channel and sends the mes-
sage before this two second time-out has expired.
A single low pitched tone will sound immediately
after the PTT switch is keyed indicating the radio
is out of range of the repeater. The radio tries to
place the call for a short period (3 seconds) after
the initial attempt. The radio generates a second
low pitched tone when it gives up trying to place
the call. The system is off the air or the radio needs
servicing when the radio is within calling range,
and these tones are heard.