2.4 GHz Cordless Speakerphone 2355 with Caller ID/Call Waiting USER'S MANUAL

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TONES AND WHAT THEY MEAN
TONE: INDICATES:
Three quick beeps Handset is out of range of the base
One double beep Handset has failed to register
with base
Two double beeps Handset battery charge is low
One beep Handset registration is complete