Avaya Nortel Communication Server 1000 Reference page 99

Trunk types
DID
RAN: continuous
operation mode
Paging
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 31: NT8D14 vintages BA/BB jumper strap settings-extended range
Trunk types
CO/FX/WATS
2-way tie (LDR)
2-way tie (OAID)
DID
RAN: pulse start or level
start modes
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 32: NT8D14 vintages BA/BB trunk types-termination impedance and balance
network
Trunk types
CO/FX/WATS
Circuit Card Reference
Loop length
Zero–600 ohms
Not applicable: RAN and
paging trunks should not
leave the building.
Loop length
> 1524 m (5000 ft)
> 600 ohms
Not applicable: RAN
trunks should not leave
the building.
Terminating Balance network for loop lengths (Note 2)
impedance
Zero–915 m
(Note 1)
(zero–3000 ft)
600 or 900 ohms 600 ohms
NT8D14 Universal Trunk card
Jumper strap settings
J1.X J2.X J3.X
Jumper strap settings
J1.X J2.X J3.X
Off Off 1–2
On On 1–2
Off Off 2–3
915–1524 m > 1524 m (>
(3000–5000 ft) 5000 ft)
3COM1 3COM2
J4.X
J4.X
2–3
2–3
1–2
July 2011 99