Monthly Archives: April 2015

rest

Avaya Aura System Manager Web Services

Ask ten IT professionals what excites them about today’s communication technology and you might hear ten different answers. Some folks get all worked up about video and will bore you to tears with their thoughts on H.264 vs. VP8. Others are more interested in voice and get all warm and fuzzy about quality of service […]

dtmf

A Practical Look at DTMF and RFC 2833/4733

It’s easy to get lost in the technological babble of our industry. We are awash in acronyms, product names, standards (real and pseudo), protocols, and vendor specific terminology. I can’t tell you how many times I thought I was hearing something new only to realize it was just another way of expressing an old idea. […]

Enterprise-Connect

Enterprise Connect Revisited

“Time is the longest distance between two places.” Tennessee Williams Time is a curious thing. Enterprise Connect 2015 ended only a short time ago and yet it already feels like the distant past. It doesn’t help that I’ve done about a million things since leaving Orlando, but even so, it wasn’t that long ago, was […]

city-of-forks

Multiple Registration and Call Forking With SIP

In legacy telephony, everything revolves around hardware. There is the telephone receiver you hold in your hand and the buttons you press to make calls. The telephone is connected back to a central brain by one or more dedicated wires. Those wires eventually connect the telephone to a line card that feeds signals into a […]

choices

The Fine Art of Choosing the Right SBC

I wear many different hats during the day, but the one that pays most of the bills is that of “The SIP Guy.” While I can’t take credit for coming up with SIP (that honor goes to Henning Schulzrinne and Mark Handley), I did start working with it early on and co-developed a SIP stack […]