SIP trunking is a game changer for businesses. You choose the type and quantity of trunks, including local and long distance numbers. For metered trunks, local calling is included while long distance is charged a per-minute rate. Every customer in every market is unique, so we offer flexible pricing to help your business grow. And when you grow, adding more SIP trunks is quick and easy. Clearfly allows you to increase or cut your trunk count as your call volume changes.