Ericsson LBI-39110 - Manual (Page 15)

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A Indicates the radio is configured to
notify the user via an external alarm
that an individual call has been
received.
B Not used.
∆∆
Indicates the radio’s keypad is
locked.
þþ
Mute icon - indicates the radio has
the transmit audio disabled (only
valid during duplex operation).
ALERT TONES
The Allegra Duplex radio generates a set of
unique alert tones to indicate operating status. The
following section identifies and describes the alert
tones used in the Allegra Duplex radio for
Conventional and EDACS applications .
EDACS APPLICATIONS
CALL ORIGINATE ALERT
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.
CALL QUEUED
If one short, high pitched tone
sounds after the transmitter is
keyed, this indicates that the system
has placed the request in a queue.
This tone sounds at both the
transmitting unit and the receiving
unit(s), indicating to the user on the
receiving end that they will receive a
call shortly. If the PTT is unkeyed
while in queue, the radio autokeys
(automatically keys) push-to-talk
when a channel becomes available
(see AUTOKEY).