Flash; Backlight - Cortelco 8012 Owner's Instruction Manual

Flash

The Flash key sends a timed line break. This signal is used to activate some special
services such as call waiting. The services available will depend on the telephone
company. To send a flash, press the Flash soft key while the phone is active. The
display will show R.

Backlight

In standby mode, press to toggle the backlight.
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