Basics of Troubleshooting VoIP (Tools)
An issue I was working through recently reminded me about some of the tools of the trade that we sometimes take for …
Basics of Troubleshooting VoIP (Part 1)
One of the difficulties we face when we put voice on IP-based networks is that different groups of administrators control parts of …
SIP Trunking to the VX-900
SIP trunking to the VX-900 from a CallManager or CallManager Express (CME) is fairly straightforward*, up until the point where you try …
QoS Demystified
Quality of Service (QoS) was a topic that immediately caught my curiosity when I first learned about it. I’m pretty sure I …
Getting Started With Wireshark
You already know from my post about the WCNA course that I’m a fan of Wireshark. What you might not have guessed …