Avoid too many promises – Avoid promises you can not keep – in this case, dates and timeframes for when you will 'definitely' return calls.
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:

Business Intro – quick intro announcement heard by the caller before they speak with a business representative. Usually quite short and welcoming, introducing the business to the caller.
This is the time to show your personality. People are more at ease with someone with a bit of excitement in their voice because it shows that they are capable of holding a conversation. Just because you want to come off as professional does not mean you need to come off as monotone or unapproachable. If you’re funny, you could even add a joke to your message. Just be sure that you sound approachable and warm.