Ericsson LBI-38823C - Manual (Page 15)

Call Received
If programmed, a single alert tone sounds when a group call is received
and a two tone alert (one high followed by one low tone) is sounded for an
individual call.
Call Queued (EDACS Only)
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 the queue, the radio will autokey (automatically key the PTT)
when a channel becomes available (see AUTOKEY below).
Autokey (EDACS Only)
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 auto-
matically keys on the channel when it gets the assignment. The radio
generates a long beep and holds the transmitter keyed for two seconds.
Pressing the PTT button keeps the channel and sends the message before
this two second time-out has expired.
System Busy
EDACS - If you key the PTT bar and hear three short, medium pitched
tones, this indicates that the receiving party is already engaged in
another call or the system is busy and its queue is full. You must rekey
later to access the system.
GE-MARC - If you key the PTT bar and hear a low frequency tone for
1 second this indicates all channels are busy.
Call Denied (EDACS Only)
A single low pitch beep will sound when the PTT switch is keyed and
the request is denied by the system. This happens if the unit is an invalid
user or if the unit is requesting an unavailable service.
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