Test network Jitter interoffice VoIP

Our VoIP setup includes a Netscreen 5GT and a Shoretel VoIP PBX.  I am needing to determine whether we are having issues with our download speed (512 kbps) or network jitter caused by the VPN.

What public tools are available to measure this?
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

There are some very good links here - http://www.voip-info.org/wiki/view/QoS

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
A good tool would be Pingplotter pro, available at http://www.pingplotter.com

The tool will graph latency to one or more sites over time.  It also will measue jitter and can show latency for each hop along the path if you so choose.  It can also export the graphs as .png files for you.

As far as measuring download speeds, a simple check to an ftp server can give you a good grasp of your bandwidth, download a file, and divide the size of the file by the time to download to get Kbps.
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Voice Over IP

From novice to tech pro — start learning today.