Panasonic KX-TD612E Installation Manual page 52

Installation
Note
• Pin 5 is the common terminal. Pin 5/Pin 3 is normally closed and Pin 5/Pin 4 is normally
open. When the External Relay is activated, Pin 5/Pin 3 becomes open and Pin 5/Pin 4
becomes closed.
• Pin 6/Pin 7 is normally open. It becomes closed when the ringer relay rings.
3.
Connect the equipment cables to the external relay and/or second ringer relay.
• Programming Reference
• [213] External Relay Connecting Time
• [512] External Relay Access
• Feature Reference
• External Relay
• Second Ringer
52 Installation Manual