Opens the voice file that is specified by the parameter file_name on behalf of the telephony object specified by the parameter dn and that has earlier logged in to a mailbox using the function TLoginMailBox().
TOpenVoiceFile() returns a file handle upon generation of TEventVoiceFileOpen.
|server||Local server handle to the T-Server in question.|
|dn||Directory number of the telephony object on whose behalf the file is requested to be opened.|
|file_name||A pointer to the name of the file that is requested to be opened.|
|reasons||A pointer to a data structure that provides additional information associated with this action.|
|extensions||A pointer to an additional data structure.|