Ccu Connections; Door Intercom; Doorstrike - BT Versatility Installation And Maintenance Manual

CCU connections

The CCU has the following connectors:
– Eight four way Krone connectors for the extensions
– Two four way Krone connectors for the Analogue Lines. Two lines are terminated on
each connector.
– Three RJ 45 connectors for the Basic rate ISDN interfaces.
– Two T network connections and one Internal S
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– An RJ 45 for the ISDN Primary Rate interface PR1
– RJ 11 connector for Serial Interface V24-1
– 1 Serial port connector RS232 (V24-2)
– A 2 position screw terminal for a doorstrike connection DS
– An ESP connector
– A reset switch is provided which provides a warm reset.
– Two 2 pole switches are provided which provide the 100 ohm terminating resistance
for the ISDN Basic Rate terminations SW1 and SW2.

Door Intercom

The door intercom is cabled to extension 23, the fourth extension on the CCU.
To operate the door intercom it must be programmed in system programming.
See the Programming section of the Owner's manual.

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.
connector.
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BT Versatility
Installation and Maintenance Manual
Cabling the unit
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