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Inter-Tel EncoreCX
Installation & Maintenance Manual
CCU connections
The CCU has the following connectors:
• Eight RJ11 connectors for the extensions.
• Four RJ11 connectors for the CO lines.
• An RJ45 for the T1/PRI.
• One RJ11 connector for serial interface RS232.
• A two-position screw terminal for a doorstrike connection, labeled as "DS".
• An Electrostatic Precaution (ESP) connector.
A reset switch is provided which provides a software reset.
Door Phone
The Door Phone is cabled to extension 23, the fourth extension on the CCU. To operate the Door Phone, it must
be programmed in system programming. See Page 84.
Doorstrike
The Doorstrike port provides a closed relay contact when in the operated condition. The relay contact is designed
for low voltage DC equipment and should not be used for any voltages greater than those specified within the
technical specification.
Connecting a PA (Public Address) amplifier
Any of the extensions on the system, with the exception of the programming extension, can be programmed as a
PA position. The PA is connected to the AB pair of the extension. See programming on Page 84.
Inter-Tel EncoreCX can work with two types of paging amplifiers on a station port; those designed to work on
telephone systems, and those which only offer a microphone input.
If the PA Amplifier is one designed to work on telephone systems then the extension port can be directly
connected to the PA amplifier. On the amplifier, typically, the input is marked "telephone" and has the internal
600 ohm transformer isolated input built in.
48
DOORSTRIKE
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