Avaya Nortel Communication Server 1000 Reference page 423

Trunk types
Note:
For the NT8D14BB card, J4.X is not provided on the board. The J4.X jumper setting
specified in
NT8D14BB)
Table 177: Trunk types - termination impedance and balance network (NT8D14BA,
NT8D14BB)
Trunk types
CO/FX/WATS
2-way TIE (LDR)
2-way TIE
(OAID)
DID (loop length
< 600 ohms)
DID (loop length
Š 600 ohms)
RAN: continuous
operation mode
Paging
Note:
The terminating impedance of each trunk unit is software selectable in LD 14 and should
match the nominal impedance of the connecting equipment.
Note:
The balance network of each trunk unit is software selectable between resistive 600 or
900 ohms or 3COM and jumper selectable between 3COM and 3CM2. Jumper selection
for 3COM/3CM2 restriction does not apply to NT8D14BB.
Circuit Card Reference
Loop length
Table 176: Jumper strap settings - extended range (NT8D14BA, NT8D14BB,
on page 422 does not apply.
Terminating
impedance
0–915 m (0–3000
(Note 1)
600 or 900 600 ohms
ohms
600 or 900 600 ohms
ohms
600 or 900 600 ohms
ohms
600 or 900 600 ohms
ohms
600 or 900 600 ohms
ohms
600 or 900 600 or 900 ohms
ohms
600 ohms 600 ohms
Jumper strap settings (Note 1)
J1.X J2.X
Balance network for loop lengths (Note 2)
915–1524 m
ft) (3000–5000 ft)
3COM
3COM
3COM
3COM
N/A
N/A
N/A
Configuration
J3.X J4.X
(Note 2)
> 1524 m (> 5000
ft)
3CM2
3CM2
3CM2
3CM2
3CM2
N/A
N/A
July 2011 423