Media Mode Updating
A call's media mode as stated in dwMediaMode
and a media mode message (LINE_MONITORMEDIA
) sent from the service provider to the application can and often will differ.
An application could use lineMonitorMedia
to enable monitoring for particular media modes, and use any resulting
LINE_MONITORMEDIA messages as guidance in determining what the calling party might be
probing for or what the Unknown application should probe for first.
LINE_MONITORMEDIA messages report events on the line (such as probes being received from
the remote station) and not "hard" decisions about media modes. When an
application determines that a call involves a particular media mode, it calls lineSetMediaMode
to update dwMediaMode
and inform other applications of this update.
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