Continuous Alert Tones; Operating Nomenclature; Trunked Operation; Conventional Operation - Ericsson TRUNKED MDX Operator's Manual

Continuous Alert Tones

CALL QUEUED
SYSTEM BUSY
CALL DENIED
END OF "CALLBACK" After receiving a Multi-Group Decode, Scan or

TRUNKED OPERATION

Trunked operation refers to the use of a set of radio frequency channels by
multiple user groups. Users may place and receive calls to single or multiple
users without being monitored by other users (or group) on the system.

CONVENTIONAL OPERATION

All radios on a conventional system operate in one of two modes: repeated
or talk-around. Talk-around (also referred to as "direct mode") provides a direct
radio-to-radio short-range communications link. It is intended to maintain
communications outside of the main system coverage area. Trunked features
(such as call queueing and system scan) are not available in conventional mode.
Conventional mode operation should only be used for testing purposes.
If you hear two short, high pitched beeps after you
key the microphone, the system has placed your
request in a queue. The tones sound at both your
transmitting unit and the receiving unit(s). This
indicates to the receiving unit(s) that they will
receive a call shortly. These tones will repeat every
half second at the caller's radio until Push-To-Talk
is released. If you unkey the microphone while in
queue, your radio will autokey when a channel
becomes available [Automatically key (push-to-
talk), see AUTOKEY].
If you key the microphone and hear four short, low
pitched beeps, the receiving party is already on the
system or the system is busy and its queue is full.
The busy tone sequence is repeated as long as you
continue to press the PTT switch. You must release
and re-key the PTT switch to access the system.
If you hear five long low pitched tones when you
key the microphone, your request has been denied
by the system. this happens if you are an invalid
user or if you are requesting an unavailable service.
Individual Call, you will have a pre-programmed
period to respond back to the caller. At the end of
this period, the radio will sound two short tones to
indicate a return to normal operation, and the re-
ceived call can no longer be answered directly.

OPERATING NOMENCLATURE

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