VTech SN6127_-2 Manual - Manual (Page 89)

Appendix
83
Handset and telephone base indicators
Handset lights
Visual ringer indicator Flashes when the handset is ringing.
On when the handset speakerphone is in use.
CHARGE On when the handset is charging in the handset
charger.
Telephone base lights
Visual ringer indicator Flashes when the telephone base is ringing.
IN USE
On when the telephone line is in use.
On when the answering system is answering
a call.
On when you are registering a handset.
Flashes when another telephone sharing the same
line is in use.
Flashes when you are deregistering all devices.
/ANS ON/OFF On when the answering system is turned on.