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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

706) 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