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4 Release Notes for Cisco IOS Release 11.3(9)T Feature Packs for the Cisco 2500 Series

System Requirements

Cisco AS2509-RJ and Cisco AS2511-RJ Access Servers

The Cisco AS2509-RJ and Cisco AS2511-RJ access servers connect asynchronous serial devices to

LANs and WANs. The access servers combine the functions of a terminal server, protocol translator,

and a router and perform both synchronous and asynchronous routing of supported protocols.

These access servers provide the following interfaces and ports:

• Eight (Cisco AS2509-RJ) or 16 (Cisco AS2511-RJ) asynchronous serial ports for connection to

modems, terminals, or other asynchronous devices

• One Ethernet attachment unit interface (AUI) port for connection to a LAN

• One synchronous serial port for connection to a WAN

• One EIA/TIA-232 console port for connection to a console terminal

• One EIA/TIA-232 auxiliary port for connection to a terminal or modem

Software Compatibility

The feature packs described in these release notes contain Cisco IOS Release 11.3(9)T software

images, some images from previous software releases, and RSL Version 7.4. Before running RSL,

see the “Loading Images on CiscoPro Routers When Using RSL” section on page 15.

Determining the Version of Your Software Release

To determine the version of Cisco IOS software running on your Cisco 2500 series router, log in to

the router, and enter the show version user EXEC command.

Cisco Internetwork Operating System Software

IOS (tm) c2500 Software (C2500-io-l), Version 11.3(9)T, RELEASE SOFTWARE

The output includes more information including processor revision numbers, memory amounts,

hardware IDs, and partition information.

EIA/TIA-449 Cisco 2500 series

EIA-530 Cisco 2500 series

X.21 Cisco 2500 series

V.35 Cisco 2500 series

Serial, synchronous Cisco 2500 series

Serial, synchronous, and asynchronous Cisco 2520, 2521, 2522, and 2523 only

ISDN BRI S/T Cisco 2503, 2504, 2516, 2520, 2521, 2522, 2523, 2524,

and 2525 only

ISDN BRI U Cisco 2524 and 2525 only

Table 2 Supported Interfaces for the Cisco 2500 Series (continued)

Interface, Network Module, or Data

Rate Platforms Supported

1 2 3 4 5 6 7 8 9 ... 27 28

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