1. Click on Basic Settings->Preferences.

2.Go to the "General" section.

3.The “Suppress DTMF Playback” field is enabled by default. To disable this field, uncheck the box.

4.Click Save Settings..

Additional Features

Model 6757i IP Phone User Guide

209

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Image 215
Aastra Telecom 6757I manual Model 6757i IP Phone User Guide 209, Click on Basic Settings-Preferences