The Comcast Business VoiceEdge products start at $29.95/line/month. For a solution that includes hardware phones, prices begin at $34.95/line/month, and there’s an activation fee of $29.95/phone. Businesses that need more than 8 lines and also need features like audio conferencing must choose the Business VoiceEdge plan. This costs $34.95-$44.95/line/month, with the biggest discounts going to companies that use more than 20 lines.