I tried the command as you specified, but it does not accept it. when I typed a questionmark after typing "voice" on global config mode, it only shows voice-card as option. The router IOS is c2800nm-ipvoicek9-mz.124-11.T4.bin. Attached are the outputs from the "sh run" and 'sh diag" command.
The version that you have specified should certainly support the VIC2-4FXO, the output from the 'show diag' indicates that the modules are recongnised, yet they do not appear within the configuration.
The earliest supported release is 12.4(2)T6, and the latest IPVoice-K9 release is 12.4(15)T1. I suspect that you running into a possible known bug, and unfortunately I cannot find any possible matches.
Therefore can I initally suggest that you upgrade to 12.4(15)T1 or later to see if the resolves the issue. I have configured a 2811 running 12.4(9)T3 with VIC2-4FXO in the past, so it is definately an IOS issue.
The AIM module incidentally is supported from 12.4(9)T6 within IPVoice-K9, therefore 12.4(15)T1 or later will fulfill your hardware requirement.
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