T8C07

What is Voice Over Internet Protocol (VoIP)?

1. AA set of rules specifying how to identify your station when linked over the internet to another station
2. BA technique employed to “spot” DX stations via the internet
3. CA technique for measuring the modulation quality of a transmitter using remote sites monitored via the internet
4. DA method of delivering voice communications over the internet using digital techniques

Pick an answer to check it.