When should a business use a SIP Trunk instead of Hosted (Complete Internet w/o an Internal Switch) SIP based VoIP?
A business should look into purchasing SIP Trunks when they decide that their needs are best met with a premise based IP-PBX after looking at call patterns, features, internal support resources, and the need for direct lines. Coupled with SIP Trunks, an IP-PBX can serve up similar features to hosted solutions servicing 3 to 4 employees per trunk while a hosted seat is used for each employee.