What is SIP (Session Initiation Protocol)?
SIP stands for Session Initiation Protocol. It is used to set up and control a part of a voice call. SIP is paired with RTP – a protocol for media content delivery.
In IP and traditional telephony, there are two phases of a voice call.
The first is “call setup,” which includes all the information needed to connect the two telephones.
After the call has been set up, the next phase is “data transfer,” in which different protocols are used to move the voice packets between the phones.
SIP is a protocol that operates at the application layer.
What is SIP used for?
SIP is a very flexible protocol designed as a general-purpose way to set up real-time multimedia sessions between participants. So, SIP is used for simple telephone calls, setting up video and audio multicast meetings or instant messaging conferences, and media distribution.
What is the difference between SIP and VoIP?
VoIP, or Voice over Internet Protocol, supports sending and receiving messages over the Internet, and SIP is a protocol used to carry all forms of digital media. SIP is the technology that supports VoIP calls.
What is SIP Trunking?
SIP trunking is the interconnection between two domains of the Unified Communications network, which allows you to expand your existing phone system by running Voice over an Internet connection. By implementing SIP trunking, your business can benefit from the scalability of cloud communications and connect with customers worldwide over Voice.
