Uniden XDECT SSE37 Series Owner's Manual page 24

Call Blocking Menu options
With the phone in standby, open the menu and select Call Blocking. Choose one of
these options:
Menu Options
View Number
Create New
Private Number
Unknown Number
Call Blocking entry options
With the phone in standby, open the menu, select Call Blocking then View Number;
scroll through the entries. Press MENU/OK to open the individual entry. Choose one of
these options:
Choose this...
Edit
Delete
Blocking a number
With the phone in standby, open the menu, select Call
the name and number to be blocked. Press MENU/OK to save the entry
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What it does
See the numbers on your call block list.
Add an entry to your call block list. The phone will
prompt you to enter a name & phone number.
Block all calls from numbers reported by CID as
"Private." (This does not count as one of the 20
entries.)
Block all calls from numbers reported by CID as
"Unknown." (This does not count as one of the 20
entries.)
To...
Edit this entry. The phone will prompt you to edit the name &
phone number.
Erase this entry from the list & allow calls from this number.
Blocking, then Create New.Enter