How to convert to this file type (strange .au file)

Unanswered Question
Oct 3rd, 2010

Dear all, hope you are doing great!

My customer has a voice gateway (Cisco 2821). He want to record a new prompt for it. Please check the download link for the old prompt file (

He has recorded a new prompt and I have to convert this file to .au with the same properties with I opened with CoolEditPro 2.1 but it asked me for sample rate, codec and I could not hear anything (just like some noisy).

So please analyze this file and tell me how to make it. Thank you very much.

I have this problem too.
0 votes
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
hiepnguyenho Sun, 10/03/2010 - 19:35

One more thing, I have made him another .au file like what I often do (8-bit mulaw, 16bit, mono). I test this file in my 2821 Router and it works normally.

But when I test this file with his Router, it said that there is an error with file format.

Here is the output of his 2821 Router:

NIVR01#audio-prompt load Reload of status failed

audio-prompt not loaded - open (or format) failure

Cisco IOS Software, 2800 Software (C2800NM-IPVOICE_IVS-M), Version 12.4(25c), RELEASE SOFTWARE (fc2)

And here is mine:

HAN-R2821-01#audio-prompt load Reload of successful

Cisco IOS Software, 2800 Software (C2800NM-ADVENTERPRISEK9_IVS-M), Version 12.4(24)T, RELEASE SOFTWARE (fc1)

So what is the problem with the router? Thank you very much.


Hiep Nguyen.


This Discussion