Topic Last Modified: 2010-11-08
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.
Supported Wave File Formats
All wave files must meet the following requirements:
- 8-bit or 16-bit file
- Linear pulse code modulation (LPCM), A-Law, or mu-Law
- Mono or stereo
- 4MB or less
For the best performance of wave files, a 16 kHz, mono, 16-bit Wave file is recommended.
Supported Windows Media Audio File Formats
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 http://go.microsoft.com/fwlink/?LinkId=202843.