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Chapter 3: Connecting to the Line
5536 PRI RAS Communications Controller Users Guide 29
Connecting Directly in a DSX1 Configuration
You can connect the board directly to the T1/PRI line without
using a CSU if the distance to your carrier is less than 655 feet
or 200 meters. The line will be in a DSX1 configuration, as
shown in the following illustration:
Figure 3-1. Direct DSX1 Connection to the Line
Connecting Directly in a DS1 Configuration
If the distance to your carrier is up to 6200 feet (1.8
kilometers), you can connect directly to the T1/PRI line with
the board’s internal CSU activated. The line will be in a DS1
configuration, as shown in the following illustration:
Figure 3-2. Direct DS1 Connection with Internal CSU
Connecting Through an External CSU to the Line
If you do not use the board’s internal CSU to connect to the
T1/PRI line in a DS1 configuration, you can connect the board
to an external CSU that connects to the metallic T1/PR1
interface. (You might want to use this method if the distance to
WAN Adapter
Telco
Less than 655 feet (200m)
WAN Adapter
Telco
Up to 6200 feet (1.8 km)