Nortel Networks 1000 User Manual
Page 705
Configuration
705
Table 277
E and M Trunk card - jumper strap settings
Mode of operation (Note 2)
2-wire trunk
4-wire trunk
DX tip & ring pair
Jumper
(Note 1)
Type I
Paging
Type I
Type II
M—rcv
E—xmt
E—rcv
M—xmt
J1.X
Off
Off
Off
Off
Pins 1–2
Pins 2–3
J2.X
On
On (Note 3)
On
On
Off
Off
J3.X
Off
Off
Off
Off
(Note 4)
(Note 4)
J4.X
Off
Off
Off
Off
Pins 2–3
Pins 1–2
J5.X
Off
Off
Off
Off
(Note 4)
(Note 4)
J6.X
Off
Off
Off
Off
On
On
J7.X
Off
Off
Off
Off
On
On
J8.X
Off
Off
Off
Off
On
On
J9.X
Pins 2–3
Pins 2–3
Pins 2–3
Pins 2–3
Pins 1–2
Pins 1–2
Note: Jumper strap settings J1.X through J9.X apply to all four units; "X" indicates the unit number,
0–3.
Note: "Off" indicates that no jumper strap is installed on a jumper block.
Note: Paging trunk mode is not zone selectable.
Note: Jumper strap installed in this location only if external loop resistance is greater than 2500
ohms.
The NT8D15 E and M Trunk Card serves various transmission
requirements. The four units on the card can operate in A-Law or µ-Law
companding modes, which are selected by service change entries. Each
unit can be independently configured for 2-wire E and M, 4-wire E and
M, and paging trunk types. The trunk type is selected by service change
entries and jumper strap settings.
See
Table 278 "E and M Trunk card - jumper strap settings" (page
and
Figure 239 "E and M Trunk card - jumper locations" (page 704)
.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311
02.06
Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.