Panasonic KX-TGM420 Operating Instructions Manual page 134

information without dialing the area code.
To activate this feature, you must edit an entry in the
caller list, then call that number. After that, phone
numbers from that caller's area code are edited
automatically.
This feature can be set for each unit (page 116). The
default setting is "On".
Note:
• Phone numbers from the 4 most recently edited
area codes are automatically edited.
Erasing selected caller information

1 [ ] CID
2 [ ]: Select the desired entry.
3 [ERASE]  [
Erasing all caller information

1 [ ] CID
2 [ERASE]  [
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]: "Yes"  [SELECT]  [OFF]
]: "Yes"  [SELECT]  [OFF]