G3 Switch 07
FUNCTION
COMMENTS
0
1
PSTN cable equalizer
(tx mode)
Bit 1 Bit 0 Setting
0 0 None
0 1 Low
1 0 Medium
1 1 High
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.
2
3
PSTN cable equalizer
(rx mode)
Bit 3 Bit 2 Setting
0 0 None
0 1 Low
1 0 Medium
1 1 High
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.
4-7
Not used
Do not change the settings.
G3 Switch 08
FUNCTION
COMMENTS
0
1
PABX cable equalizer
(tx mode)
Bit 1 Bit 0 Setting
0 0 None
0 1 Low
1 0 Medium
1 1 High
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.
2
3
PABX cable equalizer
(rx mode)
Bit 3 Bit 2 Setting
0 0 None
0 1 Low
1 0 Medium
1 1 High
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.
4-7
Not used
Do not change the settings.
May 22nd, 1995
SERVICE TABLES AND PROCEDURES
BIT SWITCHES
4-41