User's Manual Part 1

3) Option signaling: When the channel you select
is busy before valid option signaling matches, or
when the channel you select is busy and programmed
CTCSS/DCS signal is not detected before valid
option signaling matches, the transceiver is unable
to transmit.
7.6 Clear Tail Tone
When using the channel set with CTCSS/DCS,
the after sound in talking ending can be eliminated.
7.7 Remote Kill
The dealer can activate or inactivate this
function by programming.
When the transceiver receives the call of remote killing code,
it enters remote killed mode, in which it cannot
transmit, or cannot transmit and receive unless it receives
remote reviving order or is programmed by PC software.
7.8 CTCSS/DCS
The dealer can set CTCSS/DCS tones on radio
channels, which enable you to ignore (not hear)
calls from other irrelevant parties who are using the same
channel.
When you receive a signal that has a tone different from the
one set on your transceiver, you will not hear
the signal. Likewise, signals that you transmit will
only be received by parties whose CTCSS/DCS tones are
the same as yours.
Note: Using a CTCSS/DCS channel doesn't mean your calls
are
private.
If
other
parties'
CTCSS/DCS
tones
are
7.9 DTMF
The dealer can activate or inactivate this
function by programming.
1) Receiving Signals
Only when the transceiver receives programmed DTMF code
(3~10 digits), the squelch will be activated.
Usually every transceiver has a unique code. Calls
from the transceivers whose codes are not programmed
will not be heard.
The dealer can also program group code on the transceiver.
When receiving the signal with proper DTMF code,
squelch will be activated, and call can be received and LED
flashes orange.
To manually deactivate the squelch, press monitor key or the
side button set as instantaneous monitor.
The dealer can program that squelch turns off after a certain
time and LED turns dim.
If DTMF auto Transpond has been programmed, the
calling transceiver will receive confirming signal.
If DTMF signal Call Alert has been programmed, it rings when
receiving the proper code.
2) Transmitting Signals
You can transmit the preset DTMF PTT ID code by pressing
PTT button. Or you can also transmit DTMF code by pressing
the side button CALL1 or CALL2 if DTMF signal
has been programmed on the channel.
If the selective signaling on the channel is
programmed as
DTMF, and the loudspeaker is not mute and Carrier Wave
+
Selective
Signaling
has
been
activated,
press
PTT