The P-Acme-Playback Header

You can configure the ESBC to generate RTP media on a media flow when a request or response contains the P-Acme-Playback header after media setup is complete. You can configure this playback on a realm-config, sip-interface, or session-agent with either media generation method.

The P-Acme-Playback header can be included, along with the file format, by the endpoint in any request or response. When the ESBC receives a header, it starts or stops the media, based on the header's parameters. By default, the ESBC stops playback on any final response.

The syntax of the header, including all of its possible parameters, is:

P-Acme-Playback: <start|stop>[;media=<media file name>][;duration=<ms-value|once|continuous>]
[;direction=<originator|terminator|both>][;stop-on-final-resp=<true|false>]

Header Element	Description
<start|stop>	Required Defines starting and stopping playback. start: starts playback stop: stops playback
[;media=<media-name>]	Optional Defines the name of the playback configuration to play. If unspecified, the playback configuration that was triggered by the header will play.
[;duration=<ms-value|once|continuous>]	Optional Defines the duration of playback. If unspecified, the value will be taken from the playback-config that was triggered. ms-value: time value in milliseconds once: plays playback media one time continuous: loops the playback media
[;direction=<originator|terminator|both>]	Optional Defines the direction from which to play media. If unspecified, playback will begin in the realm, session agent, or SIP interface from which the header was received. originator: plays in the west flow (original caller) terminator: plays in the east flow (original callee) both: plays in both directions
[;stop-on-final-resp=<true|false>]	Optional Defines whether or not to stop playing media upon the final response. If unspecified, this parameter is true. true: stops playback automatically on a final response false: stop only after a stop header is received or media terminated

Note:

Play back trigger playback-on-header does not work with other triggers like 180-force, 183.