AT&T CL4939 - Manual (Page 20)

14
Volume control
Ringer volume
Adjust the RINGER VOL switch on the right side of
the telephone base to set the ringer volume to off,
low, middle or high. When set to off, the screen
shows .
NOTE: The volume of the priority call tone
cannot be adjusted. Refer to Priority call on page
50 for details.
Handset volume
Use the VOL switch on the right side of the
telephone base to adjust the listening volume on
the handset.
Speakerphone volume
Use the VOL switch on the right side of the
telephone base to adjust the listening volume on
the speakerphone.
Telephone settings