If you're frequently on the go or not a fan of answering the phone, consider hiring an answering service that can partially or fully take over your phone traffic.
You can add the phone number of your answering service in Freedom under Admin -> Fixed/Mobile. Then, in the dial plan, you select the answering service number where you need it. This could be only outside business hours, for example, or after the phone has rung on your own device for 10 seconds.
Of course, an answering service is a paid service. You typically pay a monthly subscription fee plus an additional amount per handled call. There are multiple answering services available online.