Ricoh G165 Service Manual page 194

Service Menu (MF Model)
BT (Busy Tone)
Detection
Comm Settings
G165/G166/G167/G181/G183/G184
This setting sets the time-out length for the 1st dial
tone detection. The machine waits for a dial tone
Timeout Length for the specified time and disconnects itself from
the line when no dial tone is input.
[10 Sec (Default)/ 15 Sec/ 20 Sec/ 30 Sec]
DFU
BT Setting [Off/ On]
BT: Busy tone
DFU
[300-550 Hz/ 300-650 Hz/ 325-525 Hz/ 340-550
BT Frequency
Hz/ 350-500 Hz/ 350-550 Hz/ 375-475 Hz/
380-520 Hz]
DFU
BT Level
[-35 dB/ -36 dB/ -37 dB/ -38 dB/ -39 dB]
DFU
BT Cadence [0.10/ 0.15/ 0.20/ 0.25/ 0.30/ 0.35/ 0.40/ 0.45/ 0.50/
0.75]
The machine checks the actual data
reconstruction errors and then transmits an RTN
depending on the decoding error rate that is set by
RTN Rate
this setting (Number of lines containing an error
per page / Total number of lines per page).
[10%/ 15%]
DFU
V34 Modem
[Permitted (Default)/ Prohibited]
DFU
V17 Modem
[Permitted (Default)/ Prohibited]
5-46 SM