Panasonic AK-UCU600P Operating Instructions Manual page 46

CCU menu
NOTE
● Turning the [SELECT] dial clockwise while pressing it increases the speed at which the number increases (turning it
counterclockwise decreases the number). Turning the dial more increases the speed even more. This operation is effective for
making a large change to a value when the setting width is large (e.g., IP address or port number).
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