Diagnostic Tools and Information

Bandwidth Calculator
Very useful bandwidth calculator for engineers and end-users who are trying to develop or deploy a VoIP system.
MOS Calculator
Useful MOS calculator to measure the quality of a VoIP audio stream.
Character Error Rate Calculator
This is a useful calculator for determining the character error rate for text telephony systems that use legacy TTY tones, RFC 4103, or V.151 character streams.
Papers and Presentations
This section contains papers and presentations on the subject of diagnostics tools, voice quality, and related topics.
Test Your VoIP
Use this tool to test your broadband connection to see if it is suitable for use with VoIP.
VoIP Troubleshooter
Provides tools and information for troublshooting VoIP networks, including a MOS and R Factor calculator.
Protocol Tools
Information and links about protocol capture tools, analyzers, decoders, and simulation tools.