2550 Video Phone User Manual IMT
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Please select a setup item you wish to set, and then press “OK” key. You can
adjust the volume by left / right key, - / + key, or volume up / down key.
Remember to press “OK” key to save change, or press “Cancel” key to keep
volume setting untouched.
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Handset Volume
Headset Volume
Speaker Volume
Audio Codec Priority
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