Home Office VoIP Gateway
A VoIP home office gateway is a device that bridges regular telephone lines and the new VoIP networks. A VoIP gateway is the link between the two technologies. Without it, people who had a regular phone service could not talk to VoIP users, and vice versa.
Gateways are usually fairly large units, with 40 ports or more. However, you can find VoIP gateways that were designed with the home office in mind which have only 4 or 8 ports, which is all you need if you are an average residential user.
Even if you have a bigger location than a home office, you can get a home office VoIP gateway to start out. For example, if you want to slowly switch over your whole company to VoIP, buy a home office gateway and use that until you need to upgrade to a bigger unit with more ports.
Buy a home office VoIP gateway
Here’s a basic gateway that I found with a web search:
http://www.okint.net/voip/bv1260.shtml
Here is a tiny 1-port analog VoIP gateway, the SPA-1001:
http://www.sipura.com/products/spa1001.htm