Nortel Networks Circuit Card - Manual (Page 64)

Page 64 of 906 Overview
553-3001-211 Standard 3.00 August 2005
Figure 11
Typical IPE trunk card architecture
Input/output
interface
control
Codec
PCM
Micro-
controller
DS-30X
interface
5.12 MHz
clock
Tx PCM
Async card
LAN link
Front
panel
LED
Card LAN
interface
Tip
Ring
Codec
PCM
Trunk interface unit power
Rx PCM
1 kHz
frame sync
Card slot
address
Back-
plane
Con-
troller
card
Trunk
signaling
interface
Control
logic
Signaling
and status
Control
Address/
data bus
553-6156
Power Supplies
Trunk lines
Tip
Ring
Trunk lines
Trunk
Interface
Unit
Trunk
Interface
Unit