| Sent to | LINEEVENT |
| Parameters | HTAPILINE htLine Specifies the TAPI DLL's opaque object handle to the line device. |
| HTAPICALL htCall Specifies the TAPI DLL's opaque object handle to the call device. | |
| DWORD dwMsg The value LINE_MONITORMEDIA | |
| DWORD dwParam1 Specifies the new media mode, of type LINEMEDIAMODE. Values are: | |
| LINEMEDIAMODE_NONE No media stream. This value is mainly used as a NULL value. | |
| LINEMEDIAMODE_UNKNOWN A media stream exists but its mode is not known. This would correspond to a call with an unclassified media type. In typical analog telephony environments, an inbound call's media mode may be unknown until after the call has been answered and the media stream filtered to make a determination. | |
| LINEMEDIAMODE_INTERACTIVEVOICE The presence of voice energy on the call and the call is treated as an interactive call with humans on both ends. | |
| LINEMEDIAMODE_DIGITALDATA Digital data being sent or received over the call. | |
| LINEMEDIAMODE_G3FAX A group 3 fax is being sent or received over the call. | |
| LINEMEDIAMODE_G4FAX A group 4 fax is being sent or received over the call. | |
| LINEMEDIAMODE_DATAMODEM A data modem session on the call. | |
| LINEMEDIAMODE_TELETEX A teletex session on the call. Teletex is one of the telematic services. | |
| LINEMEDIAMODE_VIDEOTEX A videotex session on the call. Videotex is one of the telematic services. | |
| LINEMEDIAMODE_TELEX A telex session on the call. Telex is one of the telematic services. | |
| LINEMEDIAMODE_MIXED A mixed session on the call. Mixed is one of the telematic services. | |
| LINEMEDIAMODE_TDD A TDD session on the call. TDD stands for Telephony Devices for the Deaf. | |
| LINEMEDIAMODE_ADSI An ADSI session on the call. ADSI stands for Analog Display Services Interface. | |
| LINEMEDIAMODE_UNAVAIL The media mode of the call is unavailable and will not be known.. | |
| DWORD dwParam2 Unused. | |
| DWORD dwParam3 Unused. | |
| Comments | This message is sent only when media mode monitoring is enabled. |
| See Also | Functions: TSPI_lineMonitorMedia Data Types: LINEMEDIAMODE |