Each light corresponds to a telephone set on the system. A busy lamp field usually is attached to an attendant console, letting the operator know if an extension is free, busy, or on hold. See also Norstar . Conference Set A conference set is a special telephone with external microphones designed to accommodate conference calls. Sets can be connected to an existing telephone line or a new temporary line can be added.
Consoles require a handset or headset.
Cords connecting the telephone to the handset are available in lengths of 12 and 25 feet. Off Key A cut off key is a toggle switch for 1A2 sets that allows a user to manually turn the ringer on and off, or transfer the ring to another set. Headset Headsets can be used instead of handsets by switchboard and console attendants, receptionists, and customer service representatives. A headset must be compatible witha designated telephone. For more information call 56929 .