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2.4 Installation of Optional Cards and Unit
General Installation
71
Doorphone Card for KX-TD816
Pay Tone Card for KX-TD816
Install Doorphone Card, KX-TD160.
This card connects two doorphones and two
door openers.
Doorphone
Card
Connector
Front Cover
is open.
Install Pay Tone Card, KX-TD189.
This card supports the Pay Tone
service of the central office.
Under this board