Type 99 Operation - L3Harris XL Series Operator's Manual

Or
A button on the control head or KMM can be programmed to toggle talkaround enable/disabled.
See Section 6.6 for the various options that can be programmed to the control head buttons.
If the talkaround Indication feature is enabled using RPM2, the radio plays a unique grant tone
when a call is placed on a simplex channel or when talkaround has been enabled on a duplex
channel. This feature applies to both Analog and P25 Conventional systems. It optionally allows
the radio to also play the same tone when it receives a call while operating in simplex or
talkaround. If configured, the radio plays the tone at the selected volume level.
NOTE
Talkaround Indication can be specified for each individual Analog and P25 Conventional system
configured in the personality. The following options can be selected, and apply only when the
radio is on a simplex channel or when talkaround has been enabled by the user:
Disabled: (This is the default option.) When this option is selected, the radio plays the
•
standard grant tone when a call is placed. The radio does not play a tone when a call is
received.
Transmit Only: When this option is selected, the radio plays a different "talkaround" grant tone
•
when a call is placed. The radio does not play a tone when a call is received.
Transmit and Receive: When this option is selected, the radio plays a different "talkaround"
•
grant tone when a call is placed, and at the beginning of a received call.
NOTE

4.20 TYPE 99 OPERATION

Type 99 is in-band, two-tone sequential signaling. It is a conventional signaling protocol used to
control the muting and unmuting of a radio. This signaling is commonly used for selective calling
of individual units or groups of units in a conventional system.
In Type 99 tone systems, calls are not heard until the radio detects the proper two-tone sequence.
This, in conjunction with squelch, prevents the user from hearing noise or undesired
conversations. When the radio detects the second tone, it sounds the appropriate Type 99 alert
tone. After the second tone stops, the receiver audio path is opened for the user to receive
messages.
The tone will not play on systems configured with MDC.
In the radio personality, the "Alert Tone" parameter needs to be enabled for each
channel on the Conventional Frequency Set.
parameter must also be enabled for the Talk Around Indication tone to be played
when the radio is keyed.
14221-1850-2000, Rev. C
The "Ready to Talk Tone"
53