Gestetner B147, Service Manual

Page: 872 / 1081

NCU PARAMETERS
B603 78 SM
Address Function Unit Remarks
680554 PSTN: DTMF tone attenuation level
after dialling -N x 0.5 –3.5
dBm Function 06-2 (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
68055D PSTN access pause time 20 ms This time is waited for
each pause input after
the PSTN access code. If
this address contains
FF[H], the pause time
stored in address 68054F
is used.
Do not set a number
more than 7 in the UK.
68055E Progress tone detection level, and
cadence detection enable flags Bit 7 Bit 6 Bit 5 dBm
0 0 0 -25.0
0 0 1 -35.0
0 1 0 -30.0
1 0 0 -40.0
1 1 0 -49.0
Bits 2, 0 - See Note 2.
68055F
to
680564
Not used Do not change the
settings.
680565 Long distance call prefix (HIGH) BCD
680566 Long distance call prefix (LOW) BCD
For a code of 0:
680565 - FF
680566 - F0
680567
to
680571
Not used Do not change the
settings.
680572
Acceptable ringing signal frequency:
range 1, upper limit Function 06-2
(parameter 02).
680573 Acceptable ringing signal frequency:
range 1, lower limit Function 06-2 (parameter
03).
680574 Acceptable ringing signal frequency:
range 2, upper limit Function 06-2 (parameter
04).
680575 Acceptable ringing signal frequency:
range 2, lower limit
1000/ N
(Hz).
Function 06-2 (parameter
05).