4.Service Tables
114
4 Bit4 Bit3 Bit2 Bit1 Bit0 contains errors, the signal level may be inappropriate.
Adjust the Tx level for communications with that terminal
until the results are better.
If the setting is "Disabled", the NCU parameter 01 setting is
used.
• Do not use settings other than listed on the left.
0 0 0 0 0 0
0 0 0 0 1 –1
0 0 0 1 0 –2
0 0 0 1 1 –3
0 0 1 0 0 –4
0 1 1 1 1 –15
1 1 1 1 1 Disabled
5-
7
Cable equalizer
Bit 7: 0, Bit 6: 0, Bit 5: 0 = None
Bit 7: 0, Bit 6: 0, Bit 5: 1 = Low
Bit 7: 0, Bit 6: 1, Bit 5: 0 = Medium
Bit 7: 0, Bit 6: 1, Bit 5: 1 = High
Bit 7: 1, Bit 6: 1, Bit 5: 1 = Disabled
Use a higher setting if there is signal loss at higher
frequencies because of the length of wire between the
modem and the telephone exchange when calling the
number stored in this Quick/Speed Dial.
Also, try using the cable equalizer if one or more of the
following symptoms occurs.
Communication error with error codes such as 0-20, 0-23,
etc.
Modem rate fallback occurs frequently.
• Do not use settings other than listed on the left.
If the setting is "Disabled", the bit switch setting is used.
Switch 02
No FUNCTION COMMENTS
0-
3
Initial Tx modem rate If training with a particular remote terminal always takes too long,
the initial modem rate may be too high. Reduce the initial Tx
modem rate using these bits.
For the settings 14.4 or kbps slower, Switch 04 bit 4 must be
changed to 0.
• Do not use settings other than listed on the left. If the
setting is "Disabled", the bit switch setting is used.
Bit3 Bit2 Bit1 Bit0 bps
0 0 0 0 Not
used
0 0 0 1 2400
0 0 1 0 4800
0 0 1 1 7200
0 1 0 0 9600
0 1 0 1 12000
0 1 1 0 14400
0 1 1 1 16800
1 0 0 0 19200
1 0 0 1 21600
1 0 1 0 24000
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