Ricoh MP C307 Field Service Manual page 1194

4.Service Tables
This initializes following order. [0x04, 0x40, 0x03, 0x60, 0x64, 0xf4, 0x01,0x64, 0x04, 0xc8, 0x00]
6B3AE4(H) – Dial tone detection frequency – Upper limit (High)
Defaults: NA: 06, EU: 06, ASIA: 06
6B3AE5(H) – Dial tone detection frequency – Upper Limit (Low)
Defaults: NA: 50, EU: 50, ASIA: 50
6B3AE6(H) – Dial tone detection frequency – Lower Limit (High)
Defaults: NA: 03, EU: 02, ASIA: 02
6B3AE7(H) – Dial tone detection frequency – Lower Limit (Low)
Defaults: NA: 60, EU: 90, ASIA: 90
6B3AE8(H) –Dial tone detection waiting time (20 ms)
Defaults: NA: 64, EU 64, ASIA: 64
6B3AE9 to 6B3AEA – Dial tone detection monitoring time (20 ms)
Defaults
Area
NA
EU
ASIA
6B3AEB(H) – Dial tone detect judge time (20 ms)
Defaults: NA: 64, EU: 1B, ASIA: 32
6B3AEC(H) – Dial tone disconnect permission time (20 ms)
Defaults: NA: 11, EU: 0F, ASIA: 11
112
6B35A9
F4
F4
F4
6B35AA
01
01
01