TYPE M1
(D702)
2-3
PSTN cable equalizer
(rx mode: Internal)
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.
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.
This setting is not effective in
V.34 communications.
Bit 3 Bit 2 Setting
0 0 None
0 1 Low
1 0 Medium
1 1 High
4
PSTN cable equalizer
(V.8/V.17 rx mode: External)
0: Disabled
1: Enabled
Keep this bit at "1".
6
Parameter selection for dial tone
detection
0: Normal parameter
1: Specific parameter
0: This uses the fixed table in the ROM
for dial tone detection.
1: This uses the specific parameter
adjusted with SRAM (69ECBEH -
69ECDEH). Select this if the dial tone
cannot be detected when the "Normal
parameter: 0" is selected.
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