You do not need to purchase a calling plan from Shell Energy to ensure the functionality of your broadband service. It is also possible to make calls without a calling plan in place, however every call that is made outside a call plan will be charged at a standard rate, which will be set out in the Shell Energy price list.
It is also possible to purchase several additional call related features for an extra fee, including voicemail, call divert, and call waiting.
Phone services are not offered to customers taking out a Full Fibre plan, as this type of broadband package uses fibre optic lines rather than phone lines. Although many fibre providers do offer add-on phone services, this is not currently something that is available from Shell Energy.