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iSymphony has the ability to playback voicemail and recordings directly from within the browser. In order for playback to work correctly, iSymphony needs to know the hostname or IP address of the machine that is serving the voicemail and recording files. This will allow the system to generate URLs that can be loaded by the the browser playback component.
The host that should be set is usually the hostname or IP of the phone system, which is accessible by the client machines that will be running iSymphony in their browsers. In the case that the iSymphony server is installed on the same machine as the phone system, the playback hostname or ip will be the same value that the clients utilize to access the iSymphony panel in their browsers.
If you have a remote iSymphony setup you must have a remote Voicemail and Recording Agent setup on the phone system, in order to serve the voicemail and recording files. See Remote Agents for more information.
The area where you set the playback host will differ, depending on if you are utilizing a FreePBX based phone system or not.