AIndicates the radio is configured to notify the user via an external alarm that an individual call has been received.

BNot used.

ΔIndicates the radio’s keypad is locked.

þMute 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).

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Ericsson LBI-39110 Not used Indicates the radio’s keypad is locked, Alert Tones, Edacs Applications Call Originate Alert