Assertion: modem | /r/CapableOf | claim to support adpcm
Facets:
Source sentences:
text: Modems claiming to support ADPCM almost always support Dialogic ADPCM, also known as "VOX", which is similar but not compatible with other ADPCM implementations, including Interactive Multimedia Association (IMA) ADPCM as well as MS ADPCM (a Microsoft implementation used in WAV files).