Assessing the number and quality of features available can also staggering. We assumed you'll want the basics of call forwarding, voice mail boxes, and a standard menu that lets customers select where they want to direct their calls. But consider other features, like applications that will allow portability from business to cell phone, features that will translate voicemail to text or email, call recording, fax services, and even features that will work with Google documents, Salesforce, or your office software. How much of these additional features does your company really need, and how much are they worth to you?
Why your business voicemail greeting matters A good first impression goes a long way, and a voicemail greeting is the first impression to your business. An expertly crafted voicemail script lets your clients know you’re dependable, capable, and confident. An unprofessional voicemail script, on the other hand, can do the exact opposite.

Next is a detailed evaluation for each of the seven companies identified among the best providers of virtual phone numbers.
The Session Initiation Protocol (SIP) is one of the underlying technologies that make VoIP possible. This is a text-based protocol similar to HTML. It's the most commonly used standard for setting up and controlling phone calls in most VoIP systems. You'll run across references to SIP in almost anything you do with these kinds of phone systems, especially when you're selecting any handset hardware you want to use.