Caller ID Suppression for Outgoing Calls (CLIR)
FRITZ!Box Fon WLAN 7570 vDSL
75
Caller ID Suppression for Outgoing Calls (CLIR)
The CLIR (Calling Line Identification Restriction) function
prevents your telephone number being displayed on the
other party’s phone during outgoing calls.
The CLIR function is disabled in the factory settings. You
have the option of enabling this function permanently and
then disabling it again. CLIR can also be used for individual
connections. When CLIR is permanently enabled, this set-
ting is saved for the extension and always enabled for out-
going connections.
If you would like to conduct only certain calls with the Caller
ID suppressed, prefix the number dialed with a keypad se-
quence. This enables CLIR only for the current connection.
Enable CLIR Permanently
N
Pick up the handset.
r51
<Ext.>
s1s
Dial the sequence shown at left.
r91ss
Save your settings if desired by dialing
the sequence shown at left.
O
Hang up the handset.
Disable CLIR Permanently
N
Pick up the handset.
r51
<Ext.>
s0s
Dial the sequence shown at left.
r91ss
Save your settings if desired by dialing
the sequence shown at left.
O
Hang up the handset.
CLIR on a Case-by-Case Basis
N
Pick up the handset.
s31r
Dial the sequence shown at left. Now
you hear the external dial tone.
M
Dial the number you want to call.
