This button-press allows the radio-user to activate or deactivate Bluetooth discoverable mode.
When activated, the radio listens for inquiry requests coming from other
Bluetooth devices within its range, and responds with its address, name,
and all the necessary information required for pairing and connection.
Provided
discoverable mode is not radio-user deactivated, it remains activated
for the duration specified in the Bluetooth
Radio Visibility Duration field. This feature is available while operating
in Conventional
or Trunking
communications mode.