Busy Channel Lockout; Time-Out Timer (Tot) - Hytera DMR Owner's Manual

Functions and Operations Functions and Operations
displays the icon , with LED glowing red). After the
emergency call is transmitted, please release the PTT key
to receive (the radio displays icon
received, icon appears.
To exit the Emergency mode, long press the programmed
Emergency key.

Busy Channel Lockout

Busy Channel Lockout
If enabled via the programming software, this feature
can prevent your radio interfering with other transmitting
terminals on the same channel. If you hold down the
PTT key while the channel is in use, your radio will keep
beeping and display text information "Channel Busy",
alerting you to transmission prohibition. To stop beeping,
please release the PTT key. When the channel is free, you
can press and hold down the PTT key to transmit.

Time-out Timer (TOT)

Time-out Timer (TOT)
The purpose of TOT is to prevent any user from occupying
a channel for an extended period. If the preset time
expires, the radio will automatically terminate transmission
and keep beeping. To stop beeping, please release the
PTT key. You must wait for a certain time period (preset by
your dealer) before you can press and hold down the PTT
). When a call is
key to transmit again.
If the pre-alert function is set by your dealer, your radio will
alert you to the TOT expiration in advance.
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