Yealink SIP-T21 E2 User Manual

Basic Call Features
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2. In the DND block, mark the desired radio box in the Mode field.
3. Click Confirm to accept the change.
Note
To activate DND in phone mode:
1. Press the DND soft key when the phone is idle.
The icon on the status bar indicates that DND is enabled.
DND mode is configurable via web user interface only.

Yealink SIP-T21 E2 Specifications

General

Brand	Yealink
Model	SIP-T21 E2
Category	IP Phone
Language	English