RCA 25205 User Manual

To further optimize the sound quality of your speakerphone, it also has an internal audio 

equalizer with four available settings.  These settings adjust the tone of the speakerphone 

to your personal preference.  While using your telephone in speakerphone mode, simply 

press the Preset EQ button and cycle though these four choices.  Pick the one that sounds 

the best to you.
     1. 

FLAT - No equalization adjustment is applied to the tone

     2. 

LOW - Emphasizes the deep rich bass tones of the conversation

     3. 

HIGH - Emphasizes the higher and sharper tones of the conversation

     4. 

VOICE CLARITY - Optimizes your speakerphone tone and sound quality

Like the self-calibration described above, the tone equalizer is only activated when 

speakerphone mode is activated.  If you press the 

Preset EQ button while using the 

handset or a headset, you will hear an error beep, but there will be no difference in the 

tone of the conversation.

The following special messages indicate the status of a message or the unit:
NO CALLS 

The CID memory log is empty.

UNKNOWN CALLER  The incoming call does not have CID service or their service area 

is not linked to yours. If UNKNOWN CALLER appears along with a 

calling number, the name information for that number was not 

available.

BLOCKED CALL 

The caller is registered as “Private Number” and their CID 

information is withheld.

INCOMPLETE DATA  Caller information has been interrupted or corrupted during 

transmission.

REPLACE BATTERY  You need to replace batteries to prevent data/power loss.
END OF LIST 

You are at the beginning or the end of the CID memory log.