VoIP Test

The 1-VoIP Quality & Connectivity Test requires a web browser with Java 1.5 (Version 5.0) or greater.

Java is required to run VoIP Quality Test

About the VoIP Test

This test is designed to help you evaluate how well your network will handle VoIP service. Most problems related to VoIP service due to inadequate bandwidth or poor network conditions provided by the Internet Service Provider (ISP). This test should give you an idea of the quality you can expect on your VoIP Calls.

VoIP Firewall Test

This test will check some of the UDP ports used for VoIP service. The UDP ports required for service to work may vary among providers but are generally as follows:
- 5060-5160 SIP (Used for signaling)
- 10000-20000 RTP (Used for voice)
- 4000-4999 T.38 (Used for Fax)
While the firewall test does not check all the ports, this test should give you some indication of problems related to firewall.

VoIP Speed Test

This test will check the speed and the consistency of the speed on your network. Typically the upload speed is what creates issues. As a general rule you can count on 80k of bandwidth for each call using the typical G711 CODEC. Other CODECs can use as little as 20k or as much as 240k.

You should also note that the speed test will tell you how much bandwidth you have, but you need to have a bandwidth managing router like the Cisco RVS4000 to ensure the bandwidth required for VoIP calling is always available. Otherwise, high activity on computers could create serious problems with call quality.

VoIP SIP Test

This test will check for jitter and packet loss. Most VoIP hardware is designed to deal with a certain amount of jitter and packet loss. Excessive jitter creates problems with echo cancellers and can cause echo. Excessive packet loss will cause voice to be distorted.

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