Voice over IP is simply placing phone calls over the Internet instead of traditional phone lines. This means the calls are usually cheaper, but not free in many cases since often the telco lines have to get involved at some point to either originate or terminate a call. However, true voip calls are almost always free, no matter where in the world they are.
There are many commercial products out there already that makes this easy for a user, like Vonage and Comcast’s voice, but they have fairly hefty monthly fees. They do usually offer unlimited domestic (U.S.) calls. But they also have drawbacks, like, ah not working if the power or cable goes out.
The next few posts will document my experience in rolling my own voip service.
Part 1 is compiling the support drivers on my “Linode” for Asterisk.
Click through for the details…