Nortel Networks 553-3001-211 manual Rcv, Type Paging Xmt

Page 648 of 894 NT8D15 E&M Trunk card

Table 203

E&M trunk card – jumper strap settings

			Mode of operation (Note 2)
	2-wire trunk				4-wire trunk
						DX tip & ring pair
Jumper						M—rcv	E—rcv
(Note 1)	Type I	Paging		Type I	Type II	E—xmt	M—xmt
J1.X	Off	Off		Off	Off	Pins 1–2	Pins 2–3
J2.X	On	On		On	On	Off	Off
		(Note 3)
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.

553-3001-211 Standard 2.00 September 2004