Figure 1-11. Ringer controls.
j. Handset and HOOKSWITCH. The handset is attached to the telephone set by a retractable
cord. When the handset is not in use (on-hook), it is placed on top of the HOOKSWITCH and the
HOOKSWITCH plunger is pressed down. The telephone set ringer circuits are now connected to
receive a ringing signal (See Figure 1-12.) When the handset is lifted off the HOOKSWITCH (off-
hook), the ringer circuits are disconnected and the telephone set sends an off-hook signal to the distant
equipment switchboard or telephone set). (See Figure 1-13.)
k. When the handset is placed on the HOOKSWITCH (on-hook) after a call is completed, the
telephone set sends an on-hook signal to the distant equipment and the ringer circuits are connected.