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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