Ee table 208 on – Nortel Networks Circuit Card User Manual
Page 660
Page 660 of 906
NT8D15 E&M Trunk card
553-3001-211 Standard 3.00 August 2005
Table 208
E&M trunk card – jumper strap settings
Jumper
(Note 1)
Mode of operation (Note 2)
2-wire trunk
4-wire trunk
Type I
Paging
Type I
Type II
DX tip & ring pair
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 1: Jumper strap settings J1.X through J9.X apply to all four units; “X” indicates the unit
number, 0–3.
Note 2: “Off” indicates that no jumper strap is installed on a jumper block.
Note 3: Paging trunk mode is not zone selectable.
Note 4: Jumper strap installed in this location only if external loop resistance is greater than
2500 ohms.