Cisco IOS Software Releases 12.4 T

Cisco IOS Software Release 12.4(15)T: Last Cisco IOS T Release for Select Cisco Hardware Platforms

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Last Updated: July 2008


Cisco IOS Software Release 12.4(15)T will be the last Cisco IOS T release for several Cisco hardware platforms. The following platforms will be supported by Release 12.4(15)T via regularly scheduled software maintenance rebuilds and bug fix support until end of software maintenance date for the respective platform is reached, but no later than November of 2010.

• Cisco SOHO 90 Series

• Cisco 831, 836, and 837 Series

• Cisco 850 Series

• Cisco 1701, 1711, 1712, 1721, 1751, 1751-V, and 1760 Series

• Cisco 2610XM-2611XM, 2620XM-2621XM, 2650XM-2651XM, and 2691 Series

• Cisco 3631 and 3660 Series

• Cisco 3725 and 3745 Series

• Cisco 7400 Series

• Cisco AS5850 Universal Gateway

The Cisco release delivery process, rigorous software testing, and regularly scheduled software maintenance results in significant incremental enhancements and improvement to the quality, stability, and resiliency of Cisco IOS Software Release 12.4T and 12.4 Mainline.

Additional Information

EOL/EOS Announcement for the Cisco SOHO 90 Series Secure Broadband Routers (Product Bulletin EOL4028):
EOL/EOS Announcement for the Cisco 830 Series Routers (Product Bulletin EOL4027):
EOL/EOS Announcement for the Cisco 1700 Series (Product Bulletin EOL1021):
EOS/EOL Announcement for the Cisco 2600XM Series and the Cisco 2691 Multiservice Routers (Product Bulletin EOL1022):
End-of-Sale and End-of-Life Announcement for the Cisco 3631 Router (Product Bulletin EOL2407):
EoS/EoL Announcement for Cisco 3600 Series Routers (Product Bulletin 2114):
EoS/EoL Announcement for Cisco 3700 Series( Product Bulletin EOL 1023):
EOL/EOS Announcement for the Cisco 7400 Series Routers (Product Bulletin 2541):

For More Information

Cisco hardware end-of-sale and end-of-life announcements are available at:
Contact your Cisco account team or for additional questions and support.