SIP Softswitch
It is a device capturing and controling all the signals, which are being created by the whole system, especially the made and received phone call signals. The device is mostly used for connecting regular phone system with the Internet and backwards.
Numbers starting with 0800, 800, 1-800 are usually toll-free for the caller; the called party, however, has to cover the charges on those calls.
Tufone.Inc
Tufone is a revolutionary phone service that can replace your current phone company completely. Tufone takes over as your local and long distance provider anywhere in the US (including Puerto Rico) and Canada and many countries for one low monthly price.O
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