Monthly Archives: November 2014

Will WebRTC Replace SIP

In my latest article for No Jitter, I explore a question I’ve been asked many times over the past year or so — Will WebRTC replace SIP? Will WebRTC Replace SIP As always, I would love to hear your thoughts and opinions on this subject.

Dissecting a SIP Conference Call

Every few months, I teach a two and a half day class on all things SIP. I cover every request and response messages, most of the headers, and the students use Wireshark with a SIP softphone to do in-depth call flow analysis. These flows include basic and sophisticated telephone calls, presence, and instant message. I […]

Tangled up in WebRTC Blue

While I don’t actively seek out trouble, it seems to find me, anyway. The most recent example was my article for No Jitter, When the Session Border Controller Became the Toaster. While I expected that the SBC vendors would take exception with some of what I wrote, it was the WebRTC purists that jumped all […]

AudioCodes Accepts the SBC Toaster Challenge

Last week in my No Jitter article, When the Session Border Controller Became the Toaster, I challenged the SBC vendors to excite me about their products and tell me why their solutions were better than browned bread. Well, quite a few did just that. A few commented on the No Jitter page. A few more […]

Overcoming SIP Phobia

In today’s article for No Jitter, I write about one of my chief frustrations – knowing the right thing to do, yet not doing it. This latest missive comes about from an encounter I had with an unnamed SIP service provider (one of the big ones). They sold and proclaimed to embrace SIP trunks, but […]

Andrew Speaks yet Again

I am probably like a lot of you who don’t like hearing recordings of their voice. In my head, I sound much lower than the microphone ever seems to capture. I also think that I speak much slower and with a more even tempo. Sadly, like the camera that never lies, the microphone is a […]

When the Session Border Controller Became the Toaster

This week’s article for No Jitter discusses the commoditization of the session border controller (SBC). It’s far from a rant, though. Instead, I write about how SBCs need to be positioned differently than they have been in the past. It’s not enough to talk about simultaneous sessions and adaptations. I want to hear about what […]

DTMF and RFC 2833 / 4733 Revisited

In the past year and a half that I have been writing this blog, I’ve had my share of highly successful articles and a number of total flops. The unfortunate thing is that I never know how any particular article will fare until it has been out there for a while. For instance, my top […]