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Interconnected VoIP service is a service that

(1) enable real-time, two-way voice communications; (2) require a broadband connection from the user's location; (3) require IP-compatible customer premises equipment; and (4) permit users to receive calls from and terminate calls to the public switched telephone network (PSTN).[1]


Interconnected VoIP service allows a user to make and receive calls to and from traditional phone numbers using an Internet connection, possibly a high-speed (broadband) Internet connection, such as Digital Subscriber Line (DSL), cable modem, or wireless broadband. It can be used in place of traditional phone service.

Typically, interconnected VoIP technology works by either placing an adapter between a traditional phone and Internet connection, or by using a special VoIP phone that connects directly to your computer or Internet connection. While a user may choose to use interconnected VoIP service from a single location, like a residence, some interconnected VoIP services can be used wherever one travels, as long as a broadband Internet connection is available.


  1. 47 C.F.R. §9.3.