Telephone access to meetings isn’t included in Basic plans. Basic users can dial into meetings hosted by others (assuming the host has a Pro account of higher). But since phone access isn’t included with Basic plans, the answer to your question about hosting a meeting by phone for a Basic user would be “no.”
Host account is Pro or above (subscribed to the Audio Plan add-on for toll-free phone numbers) For joining a meeting or webinar by phone: Host account allows participants to join by telephone (Audio Type user setting) For joining a scheduled meeting by phone: Host's scheduled meeting allows participants to join by telephone (Audio setting in schedule meeting settings) For joining a webinar by phone: Host account allows participants to join webinars by telephone (Allow webinar attendees to dial in through above numbers account-level setting) Host's webinar allows participants to join by telephone (Audio setting in schedule webinar settings)