Model 7974 Switchpack Definitions - Paradyne 7974 Installation Instructions Manual

Model 7974 Switchpack Definitions

Table 12 through Table 15 list Model 7974 Switchpack definitions.
Table 12. Switchpack S4 Definitions (Model 7974)
Switch # . . .
1
2
3
4
5
6, 7, 8
Table 13. Line Equalization, Switches 6– 8 on Switchpack S4 (Model 7974)
Switch Position
8 7 6
OFF OFF OFF
OFF OFF ON
OFF ON OFF
OFF ON ON
ON OFF OFF
ON OFF ON
ON ON OFF
ON ON ON
Allows you to . . .
Enable or disable Switchpacks S3 and S4.
OFF = Switchpacks Disabled
ON = Switchpacks Enabled
Not used
Select the unit's primary timing source. Valid only for a unit
configured as the LTU.
OFF = Internal Clock
ON = DSX-1 Clock
Control the unit's T1 line coding.
OFF = B8ZS
ON = AMI
Control the unit's framing format
OFF = ESF
ON = D4
Control the unit's line equalization. Refer to
Equalization, Switches 6– 8 on Switchpack S4 (Model
three switches form a binary value used as an index to the table of
equalization values. Off denotes 0 (zero) and On denotes 1 (one).
000 (all Off) = 0–133 feet
Line Equalization
0–133 feet
133–266 feet
266–399 feet
399–533 feet
533–655 feet
0–133 feet
0–133 feet
0–133 feet
27
Default in Bold
Table 13, Line
7974). The
Default in Bold