User's Manual

Using Advanced Features 23
➤ Lift the handset. Dial on your touchtone telephone:
Blocked numbers
If you want to block calls to one specific phone number, you can store it as
a blocked number. Once you have stored a blocked number, the NIU will not
dial it, regardless of the level of call restriction in effect. A blocked number
can be canceled only by a person who knows the password.
Storing a blocked number
You can store up to five blocked numbers in memory locations 26 through
30 on your NIU.
➤ Lift the handset. Dial on your touchtone telephone:
Canceling a blocked number
To cancel a blocked number that has been set on your NIU, repeat the
above dialing sequence but omit the phone number.
➤ Lift the handset. Dial on your touchtone telephone:
<speed dial location> = 21 through 25
<speed dial location> = 26 through 30
<speed dial location> = 26 through 30
#
<speed dial location> <four-digit password>
1
0
<phone number>
#
#
<speed dial location> <password> <phone number>
1 0 #
#
<speed dial location> <password>
1 0
#