Cisco AS5350 - Universal Access Server - C H a P T E R 1 Understanding Basic Hardware Architecture and Cisco IOS Software

1-2
Cisco AS5350 and Cisco AS5400 Universal Gateway Software Configuration Guide
OL-3418-02 B0
Chapter 1 Understanding Basic Hardware Architecture and CiscoIOS Software
Basic Hardware Architecture
Figure 1-1 Cisco AS5350 and Cisco AS5400 Basic System Architecture
Cloning
Cloning
Asynchronous
interfaces
Group-async
interface
TTY lines
Modems
56092
Inside a Cisco
network gateway
Serial interface
channels S0:1, S0:2…
Dialer interface
controlling the
D channels
TDM bus
T1 controllers
PRI lines
POTS line BRI line
ISDN
router
Client
modem
Legend
Client
PC
Client
PC
= Synchronous PPP
= Asynchronous PPP
= Configuration
template
PSTN
Routing and
switching engine
IP
network
V
V
V