Ntmw50Aa - Nortel Meridian 1 Planning, Installation And Operating Instructions

Page 118 of 536
Table 11
Jumper Strap Settings
Trunk Types
Factory Setting
CO/FX/WATS
2-way TIE (LDR)
2-way TIE (OAID)
DID
RAN: continuous
operation mode
Paging
Extended Range
CO/FX/WATS
2-way TIE (LDR)
2-way TIE (OAID)
DID
RAN: pulse start or
level start modes
Note: Jumper strap settings J1 n, J2 n, J3 n and J4 n apply to all trunk units. 'n' indicates the unit number
(0-3). 'Off" means that no jumper strap is installed on a jumper block. Store unused straps by installing them
on a single jumper pin.

NTMW50AA

553-3121-210 Standard 3.0
Chapter 13 – Installing the circuit cards
Loop Length
0 — 5000 ft (1525 m)
0 — 600 ohms
Not applicable: RAN
and Paging trunks
should not leave the
premises.
> 5000 ft (1525 m)
> 600 ohms
Not applicable: RAN
and Paging trunks
should not leave the
premises.
The NTMW50AA is a wall mounted enclosure installed next to the main
cabinet. The NTMW50AA houses the NTMW49AA RS232 Service Module
(RSM). The RSM connects to the backplane in the main cabinet by way of a
25-pair cable. The RSM provides buffering for the RS232 signals that come
from the Compact Mail circuit card.
January 1999
Jumper Strap Settings
J1 n J2 n
Off Off
J1 n J2 n
Off Off
On On
Off Off
J3 n J4 n
1-2 1-2
J3 n J4 n
1-2 1-2
1-2 2-3
2-3 1-2