Ring4 will display for any incoming call which line is Ringing, so you will know if it is a business call or personal one.
Be sure to give their Ring4 numbers a name so you can tell what number is ringing and if it is your personal line or business line.
If you receive a call Ring4 will display which phone line is ringing, so you will know right away if it is a business call or personal one before answering your phone.