Nortel Networks 553-3001-211 manual 32 of 894 Overview Typical IPE analog line card architecture

Page 32 of 894 Overview

Figure 2

Typical IPE analog line card architecture

		Input/output		Codec				lines
			interface
			control	PCM
								telephone
						Line	Tip
						Interface	Ring
								digital
						Unit
Front
				Address/				or
panel
				data bus				Analog
	LED
			Micro-
			controller
	Card slot
Back-	address
plane				Codec				lines
			Card LAN	PCM
								telephone
			interface
	Async card					Line	Tip
	LAN link					Interface	Ring
								or digital
						Unit
	Tx PCM
Con-	Rx PCM							Analog
troller			DS-30X
card	5.12 MHz
			interface		Line
		clock				Line interface unit power
				Signaling	signaling
		1 kHz
					interface
				and status
	frame sync
				Control
				Control
				logic
	Power supplies						553-6150
553-3001-211		Standard 2.00		September 2004