General information
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Intended use
The OpenScape Desk Phone is a desktop or wall-mounted unit designed for voice transmission
and for connection to a LAN. Any other use is regarded as unintended.
Telephone type
The identification details (exact product designation and serial number) of your telephone can be
found on the nameplate on the underside of the base unit.
Specific details concerning your communication platform can be obtained from your administrator.
Please always have this information to hand when you contact our service department regarding
faults or problems with the product.
Speakerphone quality and display legibility
• To ensure good speakerphone quality, the area in front of the microphone (front right) should be
kept clear. The optimum speakerphone distance is 50 cm.
• Proceed as follows to optimize display legibility:
– Turn the phone to tilt the display to ensure you have a frontal view of the display and avoid
light reflexes.
– Adjust the contrast as required
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Voice encryption
On OpenScape Business (from R 4), your OpenScape Desk Phone IP 35 G supports voice en-
cryption from software release 3 (V1 R0.xxxx). This allows you to use your
OpenScape Desk Phone to conduct calls without the risk of eavesdropping. Voice transmission is
encrypted and then decrypted again on the call partner's phone and vice versa.
If "Secure Mode" is enabled on your phone and a connection is established to a phone that does
not support voice encryption, the call is not encrypted and is thus not secure.
Your administrator can define in your communication system whether you are notified of unen-
crypted calls and how
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