Setting it up
Setting up VoIP is fairly simple. You need a reliable internet connection with decent bandwidth. Most VoIP providers handle delivering calls and software needs—particularly if you’re using plug-and-play phones certified for that service provider.
Generally, there are no other hardware requirements aside from the phones themselves.
If you opt for a self-hosted, onsite VoIP system, it gets a little more involved. You’ll need to get a VoIP-friendly version of the private branch exchange (PBX) phone system many businesses already use to handle routing your calls to the appropriate phones on the network as well as a PTSN gateway to sit between the VoIP PBX software and the traditional public switch telephone network.
If you don’t wish to host your PBX software on your server, you can opt for a cloud-based phone system. That way, all of the hosting and management is done through a cloud service provider and paid on a subscription basis.
Whatever option you choose, managing the network phones and extensions is fairly simple and you can do further fine-tuning via your provider’s online account interface.
The IP phones themselves usually come in two forms. Most look very much like the traditional desktop business phone with all of the usual features—speakerphone, hold and transfer buttons, multi-caller functions, etc. Some even allow for video conferencing which comes in useful for demos, sales pitches, or just providing a human face to communication.
The other option is “softphones” which are software-based clients installed on computers and mobile devices. These offer the same full functionality as the desktop phones, plus often have instant messaging capability and, with video input available, allow for face-to-face video conferencing.