Author Archives | Jim O'Brien

Jim O'Brien

About Jim O'Brien

Jim O’Brien is the Director Server Engineering for CounterPath and is responsible for architecting customized solutions for CounterPath customers as well as integrating, deploying and supporting mobile VoIP solutions. Jim designed, launched, and supported wholesale and enterprise VoIP networks for GTE, Genuity, and Level(3). Jim joined CounterPath with the acquisition of BridgePort Networks in 2008.

How to Make a VoIP Call with a SIP Softphone at 35,000 ft

April 2, 2014

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Many airlines these days are starting to offer Wi-Fi service for free or a small surcharge. That’s great for surfing the Internet, but for those of us hoping to stay connected on our SIP softphones while 35,000 ft in the air, unfortunately they also often block SIP. But did you know there’s a way around […]

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Knocking Down Challenges and Making New Connections

February 22, 2013

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It is particularly fitting that as our team prepares for Mobile World Congress in Barcelona this year that I take a look both back and forward at a mission that our amazing team at CounterPath has been focused on some time now. Our mission is simple: knockdown, breakthrough and eliminate operational challenges that our carrier, […]

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Carrier Grade: RANCID

September 26, 2011

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Generally the word rancid doesn’t impart an idea of good things. The RANCID we’re talking about certainly doesn’t match the definition of the word. For those amongst us who appreciated a nicely manufactured acronym, Really Awesome New Cisco confIg Differ (RANCID), rates quite high on the creativity scale. For those running networks of any size […]

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CounterPath at ClueCon 2011

August 12, 2011

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I attended Cluecon this week in Chicago. Check out the CounterPath twitter feed to review comments and photos. I arrived on Monday morning before the show started. My original plan was to spend the day in our Chicago office, but that didn’t work out since I was able to attend a training class on OpenSIPS. […]

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Carrier Grade: Bonding, Virtual Interfaces and VLANs

July 15, 2011

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CounterPath has recently been adding new services and devices to our Boston Pop Infrastructure. We have had some situations where we exceeded the number of physical interfaces with respect to the number of bonded [protected] interfaces we would like to deploy on an individual server. This led us down the path to review, and improve […]

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Carrier Grade: IP Anycast Based DNS Services

April 19, 2011

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The topic from this post comes from the experience  I had while focusing some time on hardening and growing CounterPath’s infrastructure in Boston. As those of you who work with CounterPath know, we run a “near-production” grade facility in Downtown Boston. We are located in the neutral Collocation room of the top carrier hotel facility […]

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Messaging, Mobility and the Mobilization of Wireline Services

March 31, 2011

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There have been more than a few large themes in telecom over the past 10 years.  Some have come and gone with little impact on the way we communicate.  Others have changed the communications landscape.  Today I wanted to pick on two of the themes that I think are really driving the evolution of communications: […]

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