It made me wonder what's free-er about an ordinary phone call.
You can use any phone that you like to place a call. You can even build your own phone. (Depending on your choice of phone you might have to rely on non-free parts like GSM voice codecs.)
You have the freedom of choosing between multiple service providers, all of which are interoperable. If you want, you can even get access to the underlying SS7 phone network and be your own provider.
You can use any phone that you like to place a call. You can even build your own phone. (Depending on your choice of phone you might have to rely on non-free parts like GSM voice codecs.)
You have the freedom of choosing between multiple service providers, all of which are interoperable. If you want, you can even get access to the underlying SS7 phone network and be your own provider.