G.729 IVR prompts on ISR

Unanswered Question
Jun 23rd, 2009

hi, all!

Did anybody recorded *.au prompts for ISR with G.729 payload?

I got a pretty headache trying to find the way to record or convert existing prompts to G.729...

Help will be very appreciated, thanks!

I have this problem too.
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Paolo Bevilacqua Wed, 06/24/2009 - 03:03

Hi, already replied in another thread.

Cisco recommends "cooledit". Other SW may do as well.

ilyaavers Wed, 06/24/2009 - 21:25

no results.

neither "cooledit" nor "sound forge" has no capability to save G.729 encoded files.

maximum result achieved - i have clean G729 encoded bitstreams created by asterisk's converter or using tools from here: http://www.voiceage.com/openinit_g729.php

These files has no AU headers thus no playable by IOS.

Two another variants: use this http://www.ciscounitytools.com/HelpFiles/SetWAVFormat.htm tool, which requires Unity on windows (I have no Unity) ot to use built-in to CCM4 MOH transcoder (I have no CCM4).

may your recorder.tcl be used for this with incoming call thru g729 dial-peer?

thanks for your help.

Paolo Bevilacqua Wed, 06/24/2009 - 23:47

neither "cooledit" nor "sound forge" has no capability to save G.729 encoded files

At least for cooledit, that incorrect. As I wrote in a previous post, the conversion is not done with "save as", instead you've so select all the stream, then hit F11 that activates the actual recoding. You see a progress window and it takes a little time.

If you changed the header format to g.728 in recorder.tcl, it should record a g.729 call as so, but I never tried that.

ilyaavers Thu, 06/25/2009 - 01:19

Sorry, I cannot find the way to save 729 from cooledit...

Maybe vesrion? I have 2.1.

F11 button only allows resampling but not recoding to 729.

ilyaavers Sun, 06/28/2009 - 22:33

Finally i got the result using au_convert.exe utility from Cisco TAC.

This is the only way to do this as I see.

echaubet Wed, 05/22/2013 - 08:58


Is there any chance to find the au_converter.exe on the CCO or on internet?

Thank you for your help.


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