Dtmf; Dtmf Call; Ptt Id Call; Time-Out Timer - Baofeng DM-5R User Manual

To transmit on the analog channel, press and hold the [PTT]
button and speak to the microphone. To receive, release the
[PTT] button.

DTMF

DTMF Call

Initiate a Call:
● In analog mode, press and hold the [PTT] button and press
the number buttons on the panel.
● Press the [MENU] button to select a contact, and press the
[PTT] button to start DTMF call.
Receive a Call
When the host computer configures the receiving signal system
of the current channel to DTMF, the decoding is successful
when the codeword is DTMF personal ID code. You can make
call with the other party in the reset time and the code word
should be re-decoded when the reset time is up.

PTT ID Call

Initiate a Call
In analog mode, you can configure the DTMF online code and
offline code through host computer and enable online code and
offline code for analog channel, or set by (MENU Settings →
Radio Settings → PTT Online/Offline Code Option). When the
online code is enabled, the online code is sent when you press
the [PTT] button, and the offline code is sent when the [PTT]
button is released.

Time-out Timer

This feature prevents the user from occupying the channel for
too long. If the continuous transmission time exceeds the time
set by the dealer, the product will stop transmission and send
alarm. To stop the alarm tone, release the [PTT] button. To
re-transmit, press and hold the [PTT] button again after a period
of time (set by the dealer).
If the dealer sets the pre-alarm function, a pre-alarm prompt will
be made before the time set by the timeout timer is up to tell
you that the transmission will be disabled.
Note: This function is disabled in emergency alarm mode.
Busy Channel Lockout
This function can be enabled by writing-frequency software to
prevent interference with other users that are transmitting on
the same channel. If you press and hold the [PTT] button while
other users occupy the channel, the product will beep and
display "Transmission failed, sub-audio disabled" or
"Transmission failed, color code disabled", prompting that
transmission is disabled at this time. When the channel is idle,
you need to press and hold the [PTT] button to transmit.