NT5D97 Dual-port DTI2/PRI2 card Page 337 of 894

Trunk interface switches for NT5D97AD

Trunk 0 switches

Switch S12 gives the MPU information about its environment.

Table 125

General purpose switches for NT5D97AD

Switch

Description

S9/S15 Switch Setting

 

 

 

S12_1

Impedance level

OFF - 120 ohm

 

 

ON - 75 ohm

 

 

 

S12_2

Spare

X

 

 

 

S12_3

Spare

X

 

 

 

S12_4

Unit mode

OFF - Unit operates in the DTI2 mode

 

 

ON - Unit operates in the PRI2 mode

 

 

 

Switch S2 selects the Transmission mode.

Table 126

TX mode switches for NT5D97AD

TX mode

E1

Not used

S2

OFF

ON

Switch S3, S4, and S5 select LBO function.

Table 127

LBO switches for NT5D97AD

LBO setting

S3

S4

S5

 

 

 

 

0dB

OFF

OFF

OFF

 

 

 

 

7.5dB

ON

ON

OFF

 

 

 

 

15dB

ON

OFF

ON

 

 

 

 

Circuit Card Description and Installation

Page 337
Image 337
Nortel Networks 553-3001-211 manual Trunk interface switches for NT5D97AD, TX mode switches for NT5D97AD, 15dB