Yealink VP530 - Manual (Page 47)

Customizing Your Phone
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The phone LCD screen prompts “Delete the selected records?”.
5. Tap the OK soft key to confirm the deletion.
6. Tap to return to the idle screen.
To delete all entries from the history list:
1. Press the History soft key.
2. Press the Clear soft key.
The LCD screen prompts "Clear all records?".
3. Tap the OK soft key to confirm the deletion.
There are two types of DSS keys: Memory Keys and Line Keys. The use of line keys and
memory keys are almost the same. The details will be introduced below. The VP530 IP
video phone supports 18 memory keys and 4 line keys.