Monthly Archives: March 2015

Recording in Progress

Call Recording with SIP

Call into nearly every contact center on the face of the earth and you are going to hear that message. Companies use call recording for any number of purposes. Some, like financial institutions, are required by law to record certain transactions between their customers and employees. Others use call recording to improve agent performance and […]

Fife WA PD patch

911 Moves to the Cloud

If I’ve learned one thing from this industry, it’s that everything changes. What you thought was the best way to do something will one day be seen as outdated and wrong. Don’t keep up with changing technologies and you will be obsolete quicker than you can say software defined network. Worse than becoming a dinosaur, […]

leavenotrace

A Necessary Guide to the Avaya traceSBC Utility

A few months ago, I wrote what has become the most popular guide for the Avaya Session Manager SIP tracing tool, traceSM. Of course, it doesn’t hurt that I may have written the only guide, but I will take recognition in any way that I can. Today, I hope to do the same for the […]

Publish

A Deep Dive into the SIP PUBLISH Method

Last week in what turned out to be a surprisingly popular article, I walked you through the joys of the SIP SUBSCRIBE request. You saw a typical SUBSCRIBE and I explained the most important headers. You also saw how NOTIFY messages are used to convey changes in the subscribed-to entity. If you missed it, be […]

AudioCodes

Striking the Right WebRTC Balance

I stir up controversy every time I say this, but I will say it anyway. WebRTC does not define a signaling protocol. This means that developers are free to use whatever method or protocol they want when they create their solutions. In my latest article for No Jitter, I introduce my readers to the AudioCodes […]

Subscription

A Deep Dive into SIP Subscriptions

When asked about SIP, most people will tell you that it’s used to make telephone calls over an IP network. While that is certainly a true statement, it’s far too limiting. Ask me about SIP and I may mention telephone calls, but I will also tell you about media that has nothing to do with […]

pindrop

Pindrop Security

“What are you doing to make the world a better place?” I recently spoke with Andy Pittman at Pindrop Security and that was the first question I asked him. Over the years, I’ve heard plenty of dubious marketing fluff about a company’s products and services and I wanted something different. I wanted to know how […]

blogging-is-good

The Art of Blogging

As you know all too well, this is a blog about unified communications. I write a lot about SIP, but I am not afraid to tackle WebRTC, network components, 9-1-1, security, and best practices methodologies. Every once in a while I take a tangent into a subject like online privacy, but for the most part, […]

LyncStatus

The Great Presence Challenge

We’ve all done this. You are sitting in front of your PC working on a project and realize that you need some important information from a coworker. Let’s call that coworker Deborah Olson. You click over to Microsoft Lync, find Deborah in your contacts list, and see that her presence jellybean shows her to be […]