2.2.2 Voice Message
messages, fax messages,
and missed call notifications are Message objects that follow
specific conventions, including:
The value of the PidTagMessageClass property ([MS-OXOMSG]
on the Message object, as specified in section 184.108.40.206.
The format and order of voice message and fax attachments, as
specified in section 220.127.116.11
and section 18.104.22.168.
The use by the client of the PidNameAudioNotes property
(section 22.214.171.124) for
storing user annotations, as specified in section 126.96.36.199.
The optional inclusion of speech-to-text data in the PidNameAutomaticSpeechRecognitionData
property (section 188.8.131.52),
as specified in section 184.108.40.206.