What is the Call Forwarding feature?
From VoiceMailTel Wiki
Also known as Find Me/Follow Me, while callers are on hold listening to music, this feature locates you at your home, office or cell phone to deliver you the call. Thanks to the VoiceMailTel Web Interface, you can select certain times of the day and days of the week for taking calls at different numbers. This creates the impression of a single office, regardless of whether you and your employees work from different geographical locations.