Echo on Cisco 7900 Series Phones

Updated by Hayden Everly on Feb 7, 2024

If you're hearing on echo on your end and you’ve already tried adjusting the mic volume on the base it may be something called “configurable sidetone”. Sidetone lets users hear their voices played back in the headset and provides assurance that the phone is working.


This is an admin feature that was added to the Unified CM application. It is available for the following phones: 7971G-GE, 7970G, 7961G-GE, 7961G, 7941G-GE, and 7941G phones


How to fix the issue:

You will need to contact your phone admin for this step! (Unless of course you are the phone admin)

Set the Handset/Headset monitor variable in Cisco Call Manager for this phone to 'Disabled'. (This can be found in the configuration Window)



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What is Headset Answers?

This is the internal support database for Headsets.com. We manufacture and sell office headsets in North America. With over 25 years' experience in the business, we know headsets.

Please use our support database for free headset support, whether you’re a Customer of ours (or not). If you have problems, suggestions, or unanswered questions, please email us at hello@headsets.com (compliments also welcomed 😀)

Looking for office headsets in the UK? Check out Headsets.co.uk.

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