Specifications

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Release Notes for Cisco 7000 Family for Cisco IOS Release 12.1 T
78-10811-05
Important Notes
Image Deferral, Cisco IOS Release 12.1(3)T
The c7200-is-mz and c7200-js-mz images were deferred from Cisco IOS Release 12.1(3)T to
Cisco IOS Release 12.1(3a)T1 due to the following caveat:
CSCdr88376—FR LLQ: data packets appear in voice queue
Note If you wish to avoid risk of having your system affected by the above-identified defect,
you may replace it with the replacement image described above. If you do so, the same
licenses, terms and conditions that governed your rights and obligations, and those of
Cisco, with respect to the deferred image shall govern them with respect to the
replacement image. If, on the other hand, you decide not to replace the deferred image,
you proceed at your own risk. Manufacturing is discontinuing shipment of IOS Affected
and, instead, will ship Software Solution.
For additional information on Cisco IOS Release 12.1 deferrals, including the Cisco IOS Release
12.1(3)T deferral, see the What’s Hot for Cisco IOS Software Release 12.1 documentation at
Cisco.com. To reach the What’s Hot for Cisco IOS Software Release 12.1 document, log in to
Cisco.com and follow this path:
Service & Support: Software Center: Cisco IOS Software: Cisco IOS 12.1: What’s Hot for
Cisco IOS Software Release 12.1
Cisco IOS Release 12.1(3)T and 12.1(3a)T1 Voice Issues
Due to a number of issues with H.323 and SIP voice support on the AS5300, AS5800, Cisco 2600, 3600,
7200 series and MC3810 which arose in Cisco IOS Release 12.1 T, use of maintenance release 12.1(3)T
and 12.1(3a)T1 is strongly discouraged.
Due to the many customers who use these products for dial applications and significant new
functionality introduced in these releases, this version of software is being made available for dial
applications.
The problems with voice in this release are being tracked in the following DDTS reports:
CSCdr78203 PC-to-phone one way audio problem
CSCdr79120 Some information elements not passed between ISDN and H.323
CSCdr78379 A simple call via a SW (T1pri) cannot connect
CSCdr75660 Like CSCdr64591. Alerting but no ringback in ISDN
CSCdr90963 Inband tones/announcements do not propagate for most ISDN switches
CSCdr90711 Internet Call Waiting times out
For a more detailed Field Notice report see:
http://www.cisco.com/warp/public/770/fn12860.shtml