Nortel Networks 553-3001-211 manual 638 of 894 NT8D15 E&M Trunk card

Page 638 of 894 NT8D15 E&M Trunk card

Table 194

DX signaling – incoming calls with originating party release (Part 2 of 2)

	Current in	State of trunk
Condition	signaling lead	detector
Far-end on hook first	Current flow	High
Network taken down and trunk idled	No current flow	High
Near-end on hook first, network taken down	Current flow	Low
Far-end on hook, trunk idled	No current flow	High

Table 195

DX signaling – outgoing calls with originating party release on tandem connections (Part 1 of 2)

	Current in	State of trunk
Condition	signaling lead	detector
Idle	No current flow	High
Seizure (far-end ready for digits)	Current flow	High
Dial CO/FX/WATS	Current flow interrupted	High
	for each pulse
Stop sender	No current flow	Low
Go sender (universal service provided by far-end	Current flow	High
PBX if originating end is senderized)
CO/FX/WATS offices ready for digits
Stored Office DN digits	Current flow interrupted	High
	for each pulse
Outpulsed	No current flow	Low
Far end answers	No current flow	Low
Far end on hook first	Current flow	High
Near end on hook, network taken down, trunk	No current flow	High
idled

553-3001-211 Standard 2.00 September 2004