Robocalls are made using what's called voice over internet protocol or VOIP for short.

机器人电话使用的是所谓的语音通过互联网协议或简称 VOIP。

And last, but not least, I think that its important that we talk on landlines and voice over internet protocol, or VoIP phone systems.

最后但同样重要的是，我认为我们在固定电话上交谈和通过网际互连协议或 VoIP 电话系统进行语音交谈是很重要的。