VoIP

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 …

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 from a CallManager or CallManager Express (CME) is fairly straightforward*, up until the point where you try …

Quality of Service (QoS) was a topic that immediately caught my curiosity when I first learned about it. I’m pretty sure I …

To get your IP phones to work, you only need four things for your initial phone configuration: IP Address Subnet Mask Default …

Introduction to the Dial Plan and Number Plan Elements of our networks have addresses so other network elements can find them. One …

When Cisco moved their CUCM platform to a linux appliance, they limited network backups to SFTP only. There certainly are merits to …

A couple of days ago, I received one of the strange calls you just get after instructing for a while. A Marine …

**Upfront note: This post is not about best practices, it is about a quick technological fix** A couple of weeks ago I …

Packetization, or the amount of voice payload placed in each packet, is measured in Milliseconds. The packetization options available to you depend …