WAYNE, N.J. — SIPfoundry, a group pushing open-source SIP implementations, has released a binary version of a SIP PBX/proxy server architecture that designers can download and implement in their ...

Solegy has decided to take its SIP stack open source. Earthlink is among the current customers. They use it to enable their VOIP service. President Stu Sleppin said the stack was built to handle large ...

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 ...

A key piece of the popular open source communication software gets an update. Making major changes to core functionality in an existing software project can be daunting. Making those changes in a ...