Nortel Circuit Card Installation Manual page 349

Trunk interface switches for NT5D97AD
Trunk 0 switches
Switch S12 gives the MPU information about its environment.
Table 130
General purpose switches for NT5D97AD
Switch Description
S12_1 Impedance level
S12_2 Spare
S12_3 Spare
S12_4 Unit mode
Switch S2 selects the Transmission mode.
Table 131
TX mode switches for NT5D97AD
TX mode
E1
Not used
Switch S3, S4, and S5 select LBO function.
Table 132
LBO switches for NT5D97AD
LBO setting
0dB
7.5dB
15dB
NT5D97 Dual-port DTI2/PRI2 card
S9/S15 Switch Setting
OFF - 120 ohm
ON - 75 ohm
X
X
OFF - Unit operates in the DTI2 mode
ON - Unit operates in the PRI2 mode
S2
OFF
ON
S3 S4
OFF OFF
ON ON
ON OFF
Circuit Card
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S5
OFF
OFF
ON
Description and Installation