Sound levels When two sounds are added together, the volume increases. Limits must be set so that the total volume level (measured in dBm) does not exceed the allowed maximum on a telephone channel. Background music uses the system variables and system parameters described here to control these levels.
Customizing the Juke Box The following information may be useful to you if you change the Juke_Box custom server or either of the music players (pl_seg and pl_elem).
Writing your own background music subsystem When writing your own background music custom server and music players, you must consider how to pass dynamic voice data to a custom server.