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A good tool would be Pingplotter pro, available at <a href="http://www.pingplotter.com" rel="ugc">http://www.pingplotter.com</a><br />
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The tool will graph latency to one or more sites over time. &nbsp;It also will measue jitter and can show latency for each hop along the path if you so choose. &nbsp;It can also export the graphs as .png files for you.<br />
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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.
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A good tool would be Pingplotter pro, available at http://www.pingplotter.com [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.

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Our VoIP setup includes a Netscreen 5GT and a Shoretel VoIP PBX. &nbsp;I am needing to determine whether we are having issues with our download speed (512 kbps) or network jitter caused by the VPN.<br />
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What public tools are available to measure this?
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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?

Test network Jitter interoffice VoIP

Voice over IP (VoIP) is a methodology and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. Other terms commonly associated with VoIP are IP telephony, Internet telephony, broadband telephony, and broadband phone service. The term specifically refers to the provisioning of communications services (voice, fax, SMS, voice-messaging) over the public Internet, rather than via the public switched telephone network (PSTN).  Examples of the VoIP protocols are H.323, Media Gateway Control Protocol (MGCP), Session Initiation Protocol (SIP), H.248 (also known as Media Gateway Control (Megaco)), Real-time Transport Protocol (RTP), Real-time Transport Control Protocol (RTCP), Secure Real-time Transport Protocol (SRTP), Session Description Protocol (SDP), and Inter-Asterisk eXchange (IAX).