GE 21880 User Manual page 8

If batteries are empty, handset LCD will not has any display and
the handset will not response to any key. Handset is then required
to put back on Base Station / Charger cradle to charge. Handset
cannot be used until handset name and aerial icon appear. If
handset does not charged full before use, handset may emit
battery low alert tone and battery level indicator shows empty
Features
This cordless telephone is equipped with the following features:
Digital cordless telephone complying to DECT standards
Operation instruction in 10 languages
Teleconference
Call forwarding
Internal, free communication between handsets
Prefix dialing
Automatic call answering on/off
Call log function with caller list for 20 numbers or names
(network dependent)
DOT MATRIX LCD display
(1-line icon + 1-line 12 dot matrix characters)
Phone book memory with name and call number: 30 memories
in handset, 10 memories in base
Extended redialing for 5 call numbers
Microphone muting function
Acoustic battery and range warning signals
Key lock
Key tone on/off
10 incoming call ringing melodies
Ringing volume control (5 levels and silent)
DTMF/Pulse dialing
Operation of up to 4 handsets
Paging function from base station to handset
Programmable number barring
Up to 100 hours standby
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