Voice Quality Information

VoIP Voice Quality Tools

Test Your VoIP

Makes a test VoIP call from your system to one of several servers, and tells you the MOS.  The detailed results tells you why your MOS score was less than perfect.

Video Quality Information

Video Quality Tools

Test Your Video

Makes a test video call from your system to one of several servers, and gives you an indication of the video quality.   The detailed results tells you why your indication was less than perfect.

Embedded Linux

Issues with Free Open-Source (FOS) code

Somewhat biased toward proprietary OSes, and some FUD.  But change management of FOS code is an issue..

H.323 and SIP Information

Packetizer

A wealth of resources on VoIP.

pulver.com

SIP information

Jonathan Rosenberg's Presentations

Some of Jonathan Rosenberg's presentations on his website.

H.323 vs. SIP

SIP’s Future: Complicated And Competitive

You have to register with Business Communications Review to get access to this paper, but its worth it.  

Internet Telephony Feature Article

This page contains two articles that discuss the difference between H.323 and SIP.  (One mentions MGCP/Megaco)

Microtronix

Good chart that compares H.323 to SIP

Packetizer

A brief chart that compares H.248, H.323 and SIP

LECs, IXCs and Cable MSOs offering residential/Consumer VoIP

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This section removed because most, if not all of them now offer VoIP.

Codec Information

vcodex : video coding resources

The Image/Video coding tutorial is a good intro to codecs.

Video Compression Tutorial

Contains a tutorial on Wavelet Theory, introductory (very introductory) discussion of many common Video Codecs.

Fun Stuff

Our Eastern Regional Manager has taken some pictures on his travels.  General interest pictures can be found at his website, http://www.hankkarl.com

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Networking

While its always been important to have a personal network, the current economy makes networking even more important.  It can be tough to keep track of all your contacts because many have changed jobs, and some have changed jobs several times in a year because their company merged, was acquired, or went under.  There are a few sites on the web that can help you with this:  Personal Networking Resources