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August 7th, 1995
G3 Switch 07
FUNCTION
PSTN cable equalizer
(tx mode)
Bit 1
Bit 0
Setting
0
0
0
None
0
1
Low
1
1
0
Medium
1
1
High
PSTN cable equalizer
(rx mode)
Bit 3
Bit 2
Setting
0
0
None
2
0
1
Low
1
0
Medium
3
1
1
High
4
Not used
to
7
G3 Switch 08
FUNCTION
PABX cable equalizer
(tx mode)
Bit 1
Bit 0
Setting
0
0
0
None
0
1
Low
1
1
0
Medium
1
1
High
PABX cable equalizer
(rx mode)
Bit 3
Bit 2
Setting
0
0
None
2
0
1
Low
3
1
0
Medium
1
1
High
4
Not used
to
7
SERVICE TABLES AND PROCEDURES
COMMENTS
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
• Modem rate fallback occurs frequently.
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.
Do not change the settings.
COMMENTS
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
• Modem rate fallback occurs frequently.
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.
Do not change the settings.
4-31
BIT SWITCHES
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