15
Switch S1-1: Local/Remote Configuration
Use switch S1-1 to configure the unit as Remote or Local in the Model
2174 pair.
Switches S1-2 and S1-3: Symmetric/Asymmetric Operation
Use switches S1-2 and S1-3 to configure the CopperLink line rate type-
and operation.
Note
See Appendix D on page 20 for line rate distances.
Switch S1-5: General Protection (Signal to Noise Ratio)
Use switch S1-5 to configure line noise protection.
•
6dB:
Original line noise protection with 6dB SNR
•
9dB:
Better line noise protection with SNR up to 9dB
Table 2:
Local/Remote Unit Configuration
S1-1
Setting
ON
CPE/Remote
OFF
CO/Local
Table 3:
Symmetric/Asymmetric Selection Chart
S1-2
S1-3
Setting
OFF
OFF
High-Speed “Symmetric”
OFF
ON
High-Speed “Asymmetric”
ON
OFF
Long-Range “Symmetric”
ON
ON
Long-Range “Asymmetric”
Table 4:
Signal to Noise Ratio
S1-5
Setting
ON
6dB
OFF
9dB
