If you use VoIP phones for business, Virtual PBX can pull them together into a high-feature business phone system – a hosted IP-PBX without the high cost. Virtual PBX already provides the most reliable business-class hosted phone system on the market. With the convenience and power of our open VoIP peering you can get unlimited minutes for free with our new iVPBX product by using approved VoIP phones for your employees and a local number as your main business number. As with any Virtual PBX product, we provide the PBX functions, you provide the phones. You've always been able to use any kind of phone you need, including VoIP. Now however, calls going to VoIP phones can go directly to the phone over the internet, instead of first hitting the “standard” telephone system, saving money and increasing call quality.

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Most VoIP services don't offer a business "front end". You simply get a VoIP phone with no virtual attendant, no way to transfer calls between employees, and very basic single-user features. Virtual PBX gives puts all the business capabilities of a "Fortune 500" phone system in front of your VoIP phones and makes them work better for your company. We don't provide VoIP service, we route the calls to your existing VoIP phones in a professional, businesslike way that provides great advantages to your company and makes you sound more professional to your clients. It's a hosted IP-PBX using your own phones.

To get unlimited minutes from our iVPBX plan, all you need is a phone that supports Session Initiation Protocol (SIP) for incoming calls. SIP is an industry standard way for internet phones to communicate to other phones and services. While some VoIP services, such as Skype for personal use, don't support incoming calls on SIP, most do. You can use any of these providers and get your calls for free through our iVPBX plan. Most of these SIP carriers don't charge for incoming calls on SIP, but you should check with your carrier to make sure.

If your VoIP provider doesn't support SIP for incoming calls, you can still use that phone with any Virtual PBX system, but you won't get the advantage of free calling. Each call will have a cost per minute used.

We've tested and approved several VoIP carriers, and we haven't found any true SIP-compliant providers that don't work with a Virtual PBX system. If your provider supports incoming calls on standard SIP protocol, it should work. If not, you may want to try one of these tested carriers:

*Unlimited minutes assume normal business usage and only apply to local inbound numbers with calls sent to an approved SIP phone. Inbound toll-free calls are 2.9 cents per minute. Outbound calls to a standard phone (or non-SIP VoIP phones) are 1.9 cents per minute. Additional per-minute taxes may apply.