SIP carries out the call setup negotiation between two devices at the initiation phase, signaling call events (transfer requests, for example) during the connection, as well as call termination.

Session Initiation Protocol is a signaling protocol for Internet conferencing, telephony, presence, events notification and instant messaging. The protocol initiates call setup, routing ...

In this article, Wei Chen introduces the basic concepts of Session Initiation Protocol and SIP servlets. He reviews the steps involved in developing SIP servlets and presents a complete example ...

This article will drill down into the way the Session Initiation Protocol (SIP) works, and it should serve as a good starting point for really learning SIP.

This white paper provides an inexpensive path that you can use to learn more about a particular VOIP technology, Session Initiation Protocol (SIP), get experience with the products and the market ...

Here’s how to make free SIP calls — and when you shouldn’t. Session Initiation Protocol (SIP) allows one device to find another and establish a connection over the internet.

Terms, such as voice-over-internet-protocol (VoIP) caller and session initiation protocol (SIP) trunking are common, but many businesses don’t know what they really mean.

Tutorial on how to set up, host, use Session Initiation Protocol or SIP Server on Windows at home using OfficeSIP Server & Messenger.

As such, we've been resurfacing a few classics from the archives—the latest being this look at how SIP (Session Initiation Protocol) won the VoIP protocol wars once upon a time.

Session Initiation Protocol (SIP) is a must for voice over IP (VoIP) communication. But by itself, SIP is insecure and easily hacked. Here's what you need to know to protect your calls and your ...