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Answers to
frequently asked questions

You have questions regarding your telephone? Here you will find answers. Just select your product category (e.g. ISDN phones) and click on the relevant product.


Please select a product category and / or product.

How can I set up the handset volume?

Press MENU key and 2 1 1

Choose the desired volume

And confirm setting with OK

User can change handset and handsfree volume in online states as well!

During a call press UP from the control key and choose the handset volume (1-3).

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