...
Max Wait Time: The length of time the caller will wait prior to being sent to voicemail or an operator. It is recommended to set this no greater than 25-30 seconds. Note that this time is for each call handling segment; if you selected sequential ring mode, it will wait that many seconds before proceeding to the next number. If you have several numbers, the caller will wait a long length of time before being sent to voicemail.
...