2.2.4.2.1.19 LINE_MONITORMEDIA

The LINE_MONITORMEDIA packet is sent when a change in the media type of the call is detected. The sending of this packet is controlled with the MonitorMedia packet.  The LINE_MONITORMEDIA packet is sent if the client has enabled media monitoring for the media type detected.

TotalSize (4 bytes): An unsigned 32-bit integer. The total size of the asynchronous event packet.

InitContext (4 bytes): An unsigned 32-bit integer. The opaque, client-specified session value that MUST be equal to the InitContext value that is specified in the original scoping of the line Initialize request.

fnPostProcessProcHandle (4 bytes): An unsigned 32-bit integer. MUST be set to zero when sent and MUST be ignored on receipt.

hCall (4 bytes): An HCALL. The handle to the call or line device that is associated with the asynchronous event.

Msg (4 bytes): An unsigned 32-bit integer. The packet type; MUST be set to 0x0000000A (LINE_MONITORMEDIA).

OpenContext (4 bytes): The opaque, client-specified context value that MUST be equal to the OpenContext value that is specified in the original scoping of the line Open request.

This information MUST be passed back to the application with each completion and event that is associated with the handle of the line or call on the line. This field is not interpreted by TAPI.

Param1 (4 bytes): An unsigned 32-bit integer. The new media type (or mode). This parameter MUST be one of the LINEMEDIAMODE_Constants.

Param2 (4 bytes): An unsigned 32-bit integer. This MUST be ignored on receipt and can be any value. 

Param3 (4 bytes): An unsigned 32-bit integer. The "tick count" at which the specified media was detected. For TAPI versions earlier than 2.0, this parameter is unused.

hRemoteLine (4 bytes): An unsigned 32-bit integer. The handle of the client for the line value.