AT&T CL82507 - Options While on Calls; Volume Control; Call Waiting

Telephone operation
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Volume control
You can set the listening volume to one of six
levels. While on a call, press 
CID/VOLUME to
decrease or press DIR/VOLUME to increase the
listening volume.
Notes:
 Handset and speakerphone volume settings are independent.
 When the volume reaches the minimum or maximum setting, you hear two beeps.
Call waiting
If you subscribe to call waiting service from your telephone service
provider, and someone calls while you are already on a call, you
hear two beeps.
 Press on the handset to put your current call on
hold and take the new call.
 Press on your handset at any time to switch back
and forth between calls.
Note: If the Smart call blocker feature is on and in screening mode, and you receive a call
waiting call:
 If you have already picked up a screened call, the telephone checks whether the call waiting call’s
number can be found in the directory, block list or allow list. It also checks whether the caller name
is in the star name list. After that, the telephone displays the caller ID information or Blocked call
accordingly. You can press or /SPEAKER to take the new call, or press
CALL BLOCK on the handset ot block it.
 If the telephone is screening a call, the call waiting call will be ignored and logged as missed call in
the caller ID log.
Options while on calls