NEC UX5000 Feature Handbook page 97

To program your extension's name:
1. CALL1 + 8 0 0 + Dial your extension number + Enter name (see the chart above).
Your name can be up to 12 digits long.
2. HOLD .
You hear confirmation beeps.
SPK
3. to hang up.
This feature may be restricted for some users.
Name Storing
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