G.729 Wave File Format

All digit audio files used in Communication Manager API are in standard Wave file format, including these audio files:

However, since the Wave file standard does not accomodate G.729 encoding, some non-standard field values are used in the format chunk of the Wave file's RIFF structure to distinguish those encoded with G.729:

An external G.729 converter is required to convert a G.729 Wave file into a standard Wave file format that can be played.