Ricoh Aficio MP 2550B, Service Manual

Page: 870 / 1153

NCU Parameters
D361 136 SM
Address Function Unit Remarks
680552
Tone attenuation level of DTMF
signals while dialing
-N x 0.5
–3.5 dBm
SP2-103-020
(parameter 19).
See Note 5.
680553
Tone attenuation value difference
between high frequency tone and low
frequency tone in DTMF signals
-dBm x 0.5
SP2-103-021
(parameter 20).
The setting must be less
than –5dBm, and should
not exceed the setting at
680552h above.
See Note 5.
680554
PSTN: DTMF tone attenuation level
after dialling
-N x 0.5
–3.5 dBm
SP2-103-022
(parameter 21). See
Note 5.
680555
ISDN: DTMF tone attenuation level
after dialling
-dBm x 0.5 See Note 5
680556 Not used
Do not change the
settings.
680557
Time between 68054Dh (NCU
parameter 14) and 68054Eh (NCU
parameter 15)
1 ms
This parameter takes
effect when the country
code is set to France.
680558 Not used
Do not change the
setting.
680559 Grounding time (ground start mode) 20 ms
The Gs relay is closed
for this interval.
68055A Break time (flash start mode) 1 ms
The OHDI relay is open
for this interval.
68055B International dial access code (High)
68055C International dial access code (Low)
BCD
For a code of 100:
68055B - F1
68055C - 00