Owner's manual

338 NT5D97 Dual-port DTI2 PRI2 card
Table 130
Impedance level and loop mode switch settings
Swit
ch
Description
S9/S15 Switch Setting
1
Impedance level
OFF - 120 ohm
ON - 75 ohm
2
Spare X
3
Spare X
4
Unit mode OFF - Loop operates in the DTI2 mode
ON - Loop operates in the PRI2 mode
Transmission mode
A per-trunk switch (S4/S10) provides selection of the digital trunk interface
type. Refer to Table 131 "Impedance level and loop mode switch settings"
(page 338).
Table 131
Impedance level and loop mode switch settings
Description
S4/S10 switch settings
E1 OFF
Not used
Line build out
A per-trunk set of three switches (S5/S11, S6/S12 and S7/S13) provides
the dB value for the line build out. Refer to Table 132 "Trunk interface line
build out switch settings" (page 338).
Note: Do not change this setup.
Table 132
Trunk interface line build out switch settings
Switch setting
Description S5/S11 S6/S12 S7/S13
0dB OFF OFF OFF
Receiver impedance
A per-trunk set of four DIP switches (S8/S14 provides selection between
75 or 120 ohm values. Refer to Table 133 "Trunk interface impedance
switch settings" (page 339).
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.