Nortel Networks 1000 - Manual (Page 91)

NT8D14 Universal Trunk card 91
Jumper strap settings
Trunk types Loop length J1.X J2.X J3.X J4.X
RAN: continuous
operation mode
Paging
Not applicable: RAN and
paging trunks should not
leave the building.
Note: Jumper strap settings J1.X, J2.X, J3.X, and J4.X apply to all eight units; "X" indicates the
unit number, 0–7. "Off" indicates that no jumper strap is installed on a jumper block. Store unused
straps on the universal trunk card by installing them on a single jumper pin as shown below:
Table 30
NT8D14 vintages BA/BB jumper strap settings-extended range
Jumper strap settings
Trunk types Loop length J1.X J2.X J3.X J4.X
CO/FX/WATS
2-way tie (LDR)
2-way tie (OAID)
> 1524 m (5000 ft) Off Off 1–2 2–3
DID > 600 ohms On On 1–2 2–3
RAN: pulse start or level
start modes Not applicable: RAN
trunks should not leave
the building. Off Off 2–3 1–2
Note: Jumper strap settings J1.X, J2.X, J3.X, and J4.X apply to all eight units; "X" indicates the unit
number, 0–7. "Off" indicates that no jumper strap is installed on a jumper block.
Table 31
NT8D14 vintages BA/BB trunk types-termination impedance and balance network
Balance network for loop lengths (Note 2)
Trunk types
Terminating
impedance
(Note 1)
Zero–915 m
(zero–3000 ft)
915–1524 m
(3000–5000 ft)
> 1524 m
(> 5000 ft)
CO/FX/WATS 600 or 900 ohms 600 ohms 3COM1 3COM2
2-way tie (LDR) 600 or 900 ohms 600 ohms 3COM1 3COM2
2-way tie (OAID) 600 or 900 ohms 600 ohms 3COM1 3COM2
DID (loop < 600
ohms) 600 or 900 ohms 600 ohms 3COM1 3COM2
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.