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Newsletter: Measuring Delay and Loss over
Circuit and Packet (VoIP) networks

Circuit and packet (VoIP) networks introduce impairments such as delay and loss to speech traffic. Quantifying these impairments is an important first step to providing quality voice communications.

An application note has been prepared that describes how to measure delays and losses through circuit and packet networks using standard test equipment from GL Communications. The application note provides an introduction, discusses delay and loss in networks and is followed by a discussion of voice packet and circuit architectures. An example delay budget is given for a VoIP system with typical delays of voice codecs. The Delay/ERL measurement tool is introduced and practical examples given for non-intrusive and intrusive delay/loss measurements.

Please review this application note and give us a call if you are interested in GL's products/software for this or other applications. We would be happy to consult with you on solutions to your testing needs and we look forward to hearing from you.

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