To configure the Media Server component, open the Real-Time pages in the WebAdmin Settings realm, and follow the Media link.
Log: Use this setting to specify the type of information the Media Server component should put in the Server Log. Usually you should use the Failure (unrecoverable problems only), Major, or Problems levels. When you experience problems with the Media Server component, you may want to set the Log Level setting to Low-Level or All Info: in this case the media processing internals will be recorded in the System Log. When the problem is solved, set the Log Level setting to its regular value, otherwise your System Log files will grow in size very quickly. The Media Server component records in the System Log are marked with the MEDIA tag.
UDP TOS Tag: Use this setting to specify the TOS tag for all outgoing UDP packets sent with Media Channels. This tag can be used to set the Media traffic priority on your LAN.
Pre-playing: When a Media Channel plays a pre-recorded or pre-composed media data, it can initially send some data portions (packets) "in advance". If later network delays cause some packets to arrive to the remote party with a delay, the "pre-played" media data allow that other party to play data smoothly. Use this setting to specify the amount of media data to be "pre-played".
Lingered Playing: PBX Applications often play several media files in a sequence, composing a phrase with several part files. To ensure smooth media parts "merging", a Media Channel reports playing completion when it still has some media data to play. This allows the application to prepare the next media data portion and submit it to the Media Channel for playing. The Media Channel starts playing this next portion as soon as it actually finishes playing the previous one. Use this setting to specify when Media Channels should report playing completion.
Packet Size: Use this setting to specify the size (time length) of each RTP packet the Media Server generates.
Mixer Delay: Use this setting to specify the initial amount of delay the Media Channel uses in the "mixer" mode. Increasing this value increases the mixer quality for lines with large or variable latency, but it also increases the "playback delay".
Internal Sampling Rate: Specifies the sampling rate for internal audio processing. Increase this value if you use wide-band codecs.
When the remote peer SDP does not announce the special telephone-event codec, the Media Server tries to detect the DTMF signals in the received and decoded audio data. The following settings allow you to fine-tune this process.