Does 6500 CMM support T.38?

Answered Question
Mar 4th, 2010

Quick questions - We are using Cisco Media Medules in our 6500 Series Switches. The curernt version is 12.4(13d). Is it capable of supporting T.38 Fax Relay? If not, what will be feasible solution for us to migrate the RightFax with current VOIP? Thanks.

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Correct Answer by Aaron Harrison about 6 years 7 months ago


Looks like t.38 is supported in 12.3 and better according to the release notes:



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patscheeler Tue, 03/23/2010 - 13:55

I 'd like to know if you have been able to do any "proof of concept" testing with this Jessica?
I have only done setups for RightFax (Fax Server) T.38 directly to 2800 and higher routers.  All my interactions with TAC in the past was not to do FoIP to CMM's, (but then again, that was with CatOS and not IOS...)

Thank you .

learner2008 Thu, 03/25/2010 - 08:10


Thanks for asking that question. Not only you, we also have RightFax contractor who has same doubt.

Jessica Wang


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