Icom VE-PG3 Instruction Manual page 311

6
CONVERTER MODE SETTING SCREEN
9. [Port Settings] Menu
M Tone (continued)
r Busy Tone ..................
t Reorder Tone ...............
y Off Hook Warning Tone ...
The indication that the called number is occupied, if that number is calling
out, if the other line was left off-hook.
The indication that an invalid code has been dialed, or that all circuits (trunks)
are busy and/or the call is cannot be routed.
Alerts a user that the telephone has been left off-hook for an extended
period.
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[Port Settings]–[PHONE]