When should a business use a SIP Trunk instead of hosted?
A business should look into purchasing SIP Trunks when they decide that their needs are best met with a premise-based system. This system is often referred to as an IP-PBX. Coupled with SIP Trunks, an IP-PBX serves up similar features to hosted solutions. SIP Trunks typically save a business customer money over a hosted solution in that a SIP Trunk can serve the needs of three to four employees (depending on over subscription) while a hosted seat is needed for each employee.