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Playing Files into a Conference

Overview

You can play a file into a conference using the Play File Start message.

Modifying a File Being Played

To modify a file that is playing to a conference, use the Conference AIB in the Play File Modify message and, optionally, the File ID TLV. If you use the File ID TLV, all instances of that File ID being played in the specified conference are modified. If the File ID TLV is absent, all the files playing into that conference are modified.

Stopping a File

To stop a file that is playing to a conference, use the Conference AIB and File ID TLV in the Play File Stop message. If the File ID TLV is absent, all the files playing into that conference are stopped.

Playing Multiple Files to a Conference

You can simultaneously play multiple files into a conference. The same File ID can be played multiple times. Any subsequent action on the playing file (such as Modify or Stop) identifies the file using a combination of the Conference ID and the Play File ID. Therefore, if you modify or stop a File ID, you cause the change to happen to all instances of that File ID being played in the specified conference.

File queues are not permitted when playing multiple files into a conference. Multiple file plays are not permitted when queued files are being played.

Resource Points

When playing multiple files into a conference simultaneously, standard Play File resource points are used for each Play File.

See Address Information Block.
Tag-Length-Value block. A standardized block that allows data to inserted in a standard way into API messages.