Cisco 2500 Series Installation And Configuration Manual page 4

Overview of the Router
Table of Contents
Overview of the Router
Router Hardware Features
Port Configuration
Asynchronous/Synchronous Port Features
Communications Server Services
Remote Node Services
Terminal Services
Asynchronous Routing Services
Protocol Translation Services
System Specifications
Obtaining Service and Support
Cisco Connection Online
Ordering Documentation
Overview of the Router
The Cisco 2520/CPA2520, Cisco 2521/CPA2521, Cisco 2522/CPA2522, and Cisco 2523/CPA2523
routers are full-featured multiport serial routers with synchronous serial, LAN, and
asynchronous/synchronous serial ports permitting use as a router or communications server.
Note Throughout this publication, "the router" refers to the Cisco 2520/CPA2520, Cisco 2521/CPA2521,
Cisco 2522/CPA2522, and Cisco 2523/CPA2523 routers except when specified otherwise.
Router Hardware Features
The multiport serial routers are available in the following configurations:
Cisco 2520/CPA2520 1 Ethernet port with a selectable attachment unit interface (AUI) connection or 1
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Ethernet 10BaseT connection
1 Integrated Services Digital Network (ISDN) Basic Rate Interface (BRI)
port (RJ-45)
2 high-speed synchronous serial ports
2 low-speed asynchronous/synchronous serial ports