Depending on your needs, you can use PBX call forwarding to create a more professional image or branch out to a wider market.
For example, if you operate a home-based business, investing in a traditional PBX VoIP/SIP system would likely be cost-prohibitive.
However, you may still want many of the features a PBX system traditionally offers such as the ability to handle multiple calls at once, customized greeting, auto attendant features, voice mail, time of day routing, extensions, and so on.
Callers to your home-based business won't suspect that they're calling a home office based on the professional and efficient routing of their calls.