Nortel Networks Circuit Card - Manual (Page 124)

Page 124 of 906 Option settings
553-3001-211 Standard 3.00 August 2005
NT8D15 E&M Trunk card
Table 36
NT8D15 E&M Trunk card
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
M—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 4 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 exceeds 2500
ohms.
Note 5: Dot next to the jumper block indicates pin 1.