Nortel Networks Video Gaming Accessories 553-3001-211 Manual De Usuario
NT5D97 Dual-port DTI2/PRI2 card
Page 331 of 894
Trunk interface switches for NT5D97AA/AB
Impedance level and unit mode
The S9/S15 switch selects the impedance level and loop operation mode on
DEI2 OR PRI2. Refer to Table 117.
DEI2 OR PRI2. Refer to Table 117.
Transmission mode
A per-trunk switch (S4/S10) provides selection of the digital trunk interface
type. Refer to Table 118.
type. Refer to Table 118.
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 119 on
dB value for the line build out. Refer to Table 119 on
Table 117
Impedance level and loop mode switch settings
Impedance level and loop mode switch settings
Switch
Description
S9/S15 Switch Setting
1
Impedance level
OFF - 120 ohm
ON - 75 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
ON - Loop operates in the PRI2 mode
Table 118
Impedance level and loop mode switch settings
Impedance level and loop mode switch settings
Description
S4/S10 switch settings
E1
OFF
Not used