Service manual

NCU Parameters
D127/D128 5-76 SM Appendix
Address Function Unit Remarks
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)
BCD
For a code of 100:
68055B - F1
68055C - 00
68055C
International dial access code
(Low)