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OMTP VISUAL VOICEMAIL INTERFACE SPECIFICATION v1.2
Content-Type
Description: The message content type. This header is
used to recognize MDN and DSN messages.
This header is mandatory.
Note: The VVM client can use this header
value to distinguish between MDN or DSN
messages and other messages.
Legal Values: For voice messages: Multipart/voice-message
or Multipart/mixed
For fax messages: Multipart/fax-message or
Multipart/mixed
For video messages: Multipart/video-message
or Multipart/mixed
For ECC and number messages: Text/Plain
For DSN messages: Multipart/report: reporttype=delivery-status
For MDN messages: Multipart/report; reporttype=receipt-disposition-notification
(or reporttype=disposition-notification)
For Infotainment messages: multipart/mixed
Default Value: N/A
MIME-Version
Description: Determines the MIME version.
This header is mandatory.
Legal Values: 1.0 (Voice Version 2.0)
Default Value: 1.0 (Voice Version 2.0)
Importance
Description: Determines the message priority.
This header is optional.
Legal Values: Normal
High
Default Value: Normal
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