# Echo off and zFeedback not working **URL:** \ **Category:** API and Webhooks\ **Created:** [May 13, 2019, 9:36pm UTC](https://devforum.zoom.us/t/echo-off-and-zfeedback-not-working/4234 "2019-05-13T21:36:00Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![ndorin](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/ndorin/32/27021_2.png) [@ndorin](https://devforum.zoom.us/u/ndorin)\ **Post date:** [May 13, 2019, 9:36pm UTC](https://devforum.zoom.us/t/echo-off-and-zfeedback-not-working/4234/1 "2019-05-13T21:36:00Z")
Using Room Version: 4.3.1017.0308 In the process of developing integration for Crestron control systems, I’m running into a few API calls that don’t appear to function as documented. (using JSON response format) Sending “echo off” does not appear to disable the echo. I still get echoes of all the commands I send subsequently. Using the documented example to filter feedback and sending “zFeedback Register Op: ex Path: /Event/InfoResult/info/callin\_country\_list”, I get the command echoed back, and no error response, but when I send “zFeedback list” no filters show up in the list and that data is not filtered from subsequent InfoResult messages. ---
**Author:** ![ojus.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/ojus.zoom/32/734_2.png) [@ojus.zoom](https://devforum.zoom.us/u/ojus.zoom)\ **Post date:** [May 15, 2019, 4:45pm UTC](https://devforum.zoom.us/t/echo-off-and-zfeedback-not-working/4234/2 "2019-05-15T16:45:31Z")
Hi @ndorin, Thank you for reaching out to our Zoom Developer Support Forum. We have received your request and will get back to you shortly. Thanks! ---
**Author:** ![DeveloperBot](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/developerbot/32/12632_2.png) [@DeveloperBot](https://devforum.zoom.us/u/DeveloperBot)\ **Post date:** [August 21, 2020, 6:18pm UTC](https://devforum.zoom.us/t/echo-off-and-zfeedback-not-working/4234/3 "2020-08-21T18:18:04Z")
Closed on August 21, 2020, 6:18pm UTC