Nortel Networks Circuit Card - Manual (Page 344)

Page 344 of 906 NT5D97 Dual-port DTI2/PRI2 card
553-3001-211 Standard 3.00 August 2005
Note: Do not change this setup.
Receiver impedance
A per-trunk set of four DIP switches (S8/S14 provides selection between 75
or 120 ohm values. Refer to Table 125.
Ring ground switches for NT5D97AA/AB
A set of four Dip switches (S2) selects which Ring lines are connected to
ground. Refer to Table 126.
Table 124
Trunk interface line build out switch settings
Switch setting
Description S5/S11 S6/S12 S7/S13
0dB OFF OFF OFF
Table 125
Trunk interface impedance switch settings
Description S8/S14 switch setting
75 ohm OFF OFF ON OFF
120 ohm OFF OFF OFF ON
Table 126
Ring ground switch settings (Part 1 of 2)
Switch Description S2 switch settingS
1 Trunk 0 Transit OFF-Ring line is not grounded
ON- Ring line is grounded
2 Trunk 0 Receive OFF-Ring line is not grounded
ON- Ring line is grounded