A session initiation protocol (SIP) software stack has been unleashed for a host of comm designs, including gateways, wireless infrastructure, VoIP equipment, and more. SIP is an application layer ...

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 ...

There seems to be a constant debate about the value of moving to an open source PBX. Asterisk is the first one that comes to mind, but it is not the only one available. There are pros and cons ...