Knowledge base Call-gate setup
A number can be set to always to go voicemail, or to go to voicemail after an amount of time. Then, once in voicemail the user can key a digit. If there is an also ring number set up for the corresponding digit then the call is put through to that number as a divert. This allows you to record an announcement (voicemail message) and give the caller various options.
If there is a fail number set up as well as some also ring numbers then the fail number is used as a default if no digits are keyed. If there is a fail and no also ring then the fail number is used immediately after the announcement.