What are some alternatives?
When comparing Vitelity and Phonebooth, you can also consider the following products
Eir SIP Voice - eir SIP Voice is revolutionizing the core communications tool of business that carries both calls and data over just one connection.
MightyCall - Virtual phone system that lets you run your business from anywhere.
Google Voice - Google Voice gives you one number for all your phones, voicemail organized in an email format, free...
VirtualPBX - VirtualPBX provides hosted VoIP PBX phone services that give small and medium growing businesses a professional, fully automated call answering and routing solution
BVoIP - BVoIP allows to easily add Cloud & On-Premise VoIP PBX to the product offering without having to re-invent the wheel or add another layer to the daily operations..
RingCentral - RingCentral is the leading provider of cloud-based communications and collaboration solutions for small business and enterprise companies