Cortelco 8012 用户手册

16

Dial/Speaker Key - Used to place or answer a call.  If pressed during
a call, activates the speakerphone.

End Key - End a call.  If pressed and held, powers off the handset

Left/Right Soft Key - Performs the function indicated by the text
immediately over it in the display.

*Key - Press and hold to lock the keypad.  Set up a conference call
as described on Page 35.