Nortel Communication Server 1000S Installation And Configuration Manual page 169

NT5D97 Dual-port DTI2/PRI2 installation and removal
Switch S3, S4, and S5 select LBO function as is Table 48.
Table 48
LBO switches for NT5D97AD
LBO setting
0dB OFF
7.5dB ON
15dB ON
Switch S6 selects the Receiver interface as in Table 49.
Table 49
Receiver interface switches for NT5D97AD
Impedance
75 ohm
120 οhm
Trunk 1 switches for NT5D97AD
Table 50
Trunk 1 switches
Switch
S7
S10
S13, S14 & S15
S11
Ring ground switches for NT5D97AD
Switch S16 selects which ring lines connect to ground. When set to ON, the
ring line is grounded as shown in Table 51.
ISDN Primary Rate Interface
S3 S4
OFF
ON
OFF
S6-2
S6-1
OFF OFF
OFF OFF
Function
General Purpose...See Table 46 on
TX Mode...See Table 47 on
LBO...See Table 48 on
RX Impedance...See Table 49 on
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S5
OFF
OFF
ON
S6-3 S6-4
ON OFF
OFF ON
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Installation and Configuration