The most exclusive feature in the Flatrix-PBX, when this feature enabled on the extension calls will direct to alternate extensions/external destinations (such as mobile or landlines). First system will ring the initial extension for the defined number of seconds Once the defined duration expires, the system directs the call to ring the extension(s) and/or external destinations (such as mobile or landlines) listed as follow me numbers. This feature helps to prevent call being missed or go to the voicemail when it comes to an emergency.