Paradyne 7984, Руководство пользователя

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Configuring the Unit Using the Internal Switches
4-4
7970-A2-GB20-00 August 1999
Switchpack Definitions for Models 7974 and 7984
Table 4-1 lists Switchpack S1 definitions.
Table 4-1. Switchpack S1 Definitions (Models 7974 and 7984)
Switch # . . . Allows you to . . .
Default in Bold
1 Enable or disable Switchpacks S1 and S2.
OFF = Switchpacks Disabled
ON = Switchpacks Enabled
2 Not used
3 Select the unit’s primary timing source. Only valid for units configured
as LTU.
OFF = Internal Clock
ON = External Clock
4 Control the unit’s T1 line coding.
OFF = B8ZS
ON = AMI
5 Control the unit’s framing format
OFF = ESF
ON = D4
6, 7, 8 Control the unit’s line equalization. The 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 = 0–133 feet
001 = 133–266 feet
010 = 266–399 feet
011 = 399–533 feet
100 = 533–655 feet
101 = 0–133 feet
110 = 0–133 feet
111 = 0–133 feet