Nortel Circuit Card Installation Manual page 64

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