The problem is that RFC 3261 that defines SIP has become "everything to everyone" and bloated in both size and in flexibility. For those of you that have deployed SIP-based solutions or SIP Trunking, ...

In our last VoIP installment, we looked at the main reasons why SIP has become a widely adopted protocol, but we left details of the protocol’s inner workings fairly vague. This article will drill ...

Secure SIP is a security mechanism defined by SIP RFC 3261 for sending SIP messages over a Transport Layer Security-encrypted channel. Originally used for securing HTTP sessions, TLS can be repurposed ...

In this chapter, we start putting into practice some of the SIP concepts learned so far. We will show some very simple programming examples that illustrate how SIP works. As was stated in previous ...

Session Initiation Protocol is used widely for the setup, teardown and management of VoIP calls. Much of its functionality is related to the setup of calls, as its name implies. Part of this setup ...

The session initiation protocol (SIP) is one of the most popular signaling protocols used in applications that require a session setup and parameter negotiation before actual communication, as well as ...

This newly revised edition of the ground-breaking Artech House bestseller, SIP: Understanding the Session Initiation Protocol gives you a thorough and up-to-date understanding of this revolutionary ...

Glen Rock, N.J. — Version 2.0 of the SIP server development platform for designs running the VxWorks, Red Hat Linux, Windows, and Solaris operating systems. the new server platform supports the latest ...