NT8D15 E and M Trunkcard 95
Tabl e 34
NT8D14 vintages BA/BB cable loop resistance and loss
Cable loop resistance (ohms) Cable loop loss (dB)
(non-loaded at 1kHz)
Cable length 22 AWG 24 AWG 26 AWG 22 AWG 24 AWG 26 AWG
915 m (3000 ft) 97 155 251 0.9 1.2 1.5
1524 m (5000 ft) 162 260 417 1.6 2.0 2.5
2225 m (7300 ft) 236 378 609 2.3 3.0 3.7
3566 m (11700 ft) 379 607 977 3.7 4.8 6.0
5639 m (18500 ft) 600 960 1544 5.9 7.6 9.4
NT8D15 E and M Trunk card
Tabl e 35
NT8D15 E and M Trunkcard
Mode of operation (Note 2)
2-wire trunk 4-wire trunk
DX tip & ring pair
Jumper
(Note 1) Type I Paging Type I Type II M—rcv
M—xmt E—rcv
M—xmt
J1.X off off off off Pins 1–2 Pins2–3
J2.X on on
(Note 3) on on off off
J3.X off off off off (Note 4) (Note 4)
J4.X off off off off Pins 2–3 Pins1–2
J5.X off off off off (Note 4) (Note 4)
J6.X off off off off on on
J7.X off off off off on on
J8.X off off off off on on
J9.X Pins 2–3 Pins 2–3 Pins 2–3 Pins2–3 Pins 1–2 Pins 1–2
Note: Jumper strap settings J1.X through J9.X apply to all 4 units; "X" indicates the unit number,
0–3.
Note: Off indicates that no jumper strap is installed on a jumper block.
Note: Paging trunk mode is not zone selectable.
Note: Jumper strap installed in this location only if external loop resistance exceeds 2500 ohms.
Note: Dot next to the jumper block indicates pin 1.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright© 2003-2008, Nor tel Networks
.