Once the Caller ID data has been deleted, the information cannot be retrieved.
Deleting all Caller ID name/numbers
1)When the phone is in standby mode, press cid.
2)Press menu/del(or the DELETE soft key on the base). Delete All? Appears.
3)Press 
/volume up/down to choose Yes.
4)Press select/ (or the OK soft key). You will hear a confirmation tone.
[53]
Caller ID
New : 5
Total : 25
Delete All?
Yes
No
