Panasonic KX-TCD530SLM Service Manual page 23

NOTE:
When you put a first digit on step 9, it must overwrite the current displayed numbers. We
recommend you to write down the restricted phone number you entered.
6.11. Call BAR On/Off (Call Prohibition On/Off)
When this feature is set to ON, outgoing calls cannot be made. Intercom calls and calls to
numbers assigned as emergency numbers can be made.
6.11.1. Base Unit
6.11.2. Cordless Handset
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