Nt8D15 E&M Trunk Card - Nortel Circuit Card Installation Manual

Page 124 of 906
NT8D15 E&M Trunk card
Table 36
NT8D15 E&M Trunk card
Jumper
(Note 1) Type I
J1.X off
J2.X on
J3.X off
J4.X off
J5.X off
J6.X off
J7.X off
J8.X off
J9.X Pins 2–3
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.
553-3001-211 Standard 3.00
Option settings
2-wire trunk
Paging
off
on
(Note 3)
off
off
off
off
off
off
Pins 2–3
August 2005
Mode of operation (Note 2)
Type I Type II
off
on
off
off
off
off
off
off
Pins 2–3 Pins 2–3
4-wire trunk
DX tip & ring pair
M—rcv
M—xmt
off Pins 1–2
on off
off (Note 4)
off Pins 2–3
off (Note 4)
off on
off on
off on
Pins 1–2
E—rcv
M—xmt
Pins 2–3
off
(Note 4)
Pins 1–2
(Note 4)
on
on
on
Pins 1–2