Yealink SIP-T4X Administrator's Manual page 100

Administrator's Guide for SIP-T4X IP Phones
a) If you mark the Phone radio box:
1) Mark the desired radio box in the DND Status field.
2) (Optional.) Enter the DND on code in the DND On Code field.
3) (Optional.) Enter the DND off code in the DND Off Code field.
b) If you mark the Custom radio box:
1) Select the desired account from the pull-down list of Account.
2) Mark the desired value in the DND Status field.
3) (Optional.) Enter the DND on code in the DND On Code field.
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