VoIP stands for Voice over Internet Protocol, which is a technology that allows you to make and receive phone calls using the internet instead of traditional phone lines. It is also known as IP telephony. VoIP uses an open standard for establishing calls through the internet. The transmission of voice and multimedia content over an internet connection is called VoIP.

VoIP is a communications technology that enables you to make phone calls using your broadband connection instead of landline service. It is a method and group of technologies for voice calls for the delivery of voice communication sessions over Internet Protocol networks, such as the internet.

Government and military organizations use various security measures to protect VoIP traffic, such as voice over secure IP (VoSIP), secure voice over IP (SVoIP), and secure voice over secure IP (SVoSIP) . The distinction lies in whether encryption is applied in the telephone endpoint or in the network. Secure voice over secure IP may be implemented by encrypting the media with protocols such as SRTP and ZRTP. Secure voice over IP uses Type 1 encryption on a classified network, such as SIPRNet.