Rollover Hunting is a feature that is managed by the Account Manager or Phone Manager. It allows incoming calls to your primary phone line to roll over to the next available line and, if al l lines are busy or not answered, the call can roll over to voicemail. It will hunt through all lines in the group once to find an idle line. You can configure multiple hunt groups and the number of rings before the call is routed to the next li ne. Each hunt group must have a minimum of two lines and a unique primary number. There are three hunt sequence options:
In the former, the voicemail message shall be delivered to callers from within your company i.e. for communication exclusively for office employees. In the second case, the voicemail will be received by people calling from outside the company. Hi. You’ve reached Martha Johnson in Human Resource department. Unfortunately, I cannot attend the call now. You can leave your message after the beep. Hello. You’ve reached Martha Johnson in Human Resource department. You can either record your message after the beep or contact my secretary Henry Smith at extension 5556. I shall get back to you soon.

Don’t include the date unless it’s completely necessary. 16 of the messages I heard last month had the wrong date—one of the messages had a date over 2 months old!
Instead of you making your clients and customers sit through an Interactive Voice Response (IVR menu) so they may be directed to the person they would like to talk to, try to make fewer hurdles and steps for your customers.