Often VoIP looks like a little of both: It can call and receive PSTN calls

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Often VoIP looks like a little of both: It can call and receive PSTN calls

- Internet Phone Service ("interconnected VoIP service")
  - Vonage
  - Lingo
  - Packet8
  - AOL
  - Time Warner
  - Skype-Out

Screen shot of the Vonage home page.

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