Response Group Audio File Requirements

Lync Server 2010

Topic Last Modified: 2012-10-17

You can use Windows Media audio (.wma) file format or wave (.wav) file format for unassigned number Announcements or for Response Group messages, on-hold music, or interactive voice response (IVR) questions.

The Windows Media audio file format requires that the Windows Media Format Runtime is installed. For details, see Hardware and Software Requirements for Call Management.

All wave files must meet the following requirements:

  • 8-bit or 16-bit file

  • Linear pulse code modulation (LPCM), A-Law, or mu-Law format

  • Mono or stereo

  • 4MB or less

For the best performance of wave files, a 16 kHz, mono, 16-bit Wave file is recommended.

If you use a Windows Media audio file, consider using low bitrates, and verify the performance of your system under load.

You can use the Microsoft Expression Encoder 4 to convert a file to the Windows Media Audio format. To download Expression Encoder 4, see