This tutorial will show you how to create or convert an existing audio file and save it in CCITT u-law – 8KHz 8bit Mono format for use in Cisco Unified Call Manager Express (CUCME), Cisco Unified Contact Center (UCCX) or Cisco Unity Express (CUE). This has always been an easy task with the Windows Sound Recorder that came with Windows XP. However, the sound recorder that comes with Windows 7 does not work the same.


  • Audacity 1.3 or higher

Project adjustments

  • Open the source audio file
  • Change the project to rate to 8000 Hz (bottom left)
  • Click the drop-down arrow on the track and select ‘Split Stereo to Mono’
  • Close one of the remaining tracks

Export U-Law File