Cisco Cisco IOS Software Release 12.4(4)T
Corporate Headquarters:
Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134-1706 USA
Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134-1706 USA
Copyright © 2005 Cisco Systems, Inc. All rights reserved.
Always On Dynamic ISDN (AO/DI) Enhancements
The Always On Dynamic ISDN (AO/DI) Enhancements update the existing Cisco AO/DI software to
allow Layer 2 communications to be reestablished whenever there is X.25 traffic to be transported, even
after a central office has brought down Layer 1 and Layer 2 circuits.
allow Layer 2 communications to be reestablished whenever there is X.25 traffic to be transported, even
after a central office has brought down Layer 1 and Layer 2 circuits.
History for the Always On Dynamic ISDN (AO/DI) Enhancements Feature
Finding Support Information for Platforms and Cisco IOS Software Images
Use Cisco Feature Navigator to find information about platform support and Cisco IOS software image
support. Access Cisco Feature Navigator at
support. Access Cisco Feature Navigator at
. You must have an account on
Cisco.com. If you do not have an account or have forgotten your username or password, click Cancel at
the login dialog box and follow the instructions that appear.
the login dialog box and follow the instructions that appear.
Contents
•
•
•
Prerequisites for Always On Dynamic ISDN (AO/DI)
Enhancements
Enhancements
The Cisco IOS Always On Dynamic (AO/DI) ISDN Enhancements update operation of the Cisco IOS
AO/DI software. To use AO/DI, the X.25 encapsulation (per RFC 1356), PPP, Bandwidth Allocation
Control Protocol (BACP), and Bandwidth Allocation Protocol (BAP) modules must be present in both
the AO/DI client and server.
AO/DI software. To use AO/DI, the X.25 encapsulation (per RFC 1356), PPP, Bandwidth Allocation
Control Protocol (BACP), and Bandwidth Allocation Protocol (BAP) modules must be present in both
the AO/DI client and server.
Release
Modification
12.4(4)T
This feature was introduced.