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MicroCSU/DSU Cards and MicroRacks
3. Before You Begin
This chapter describes how to install the MicroCSU/DSU for dedicated operation
or for use as a campus-area short-haul modem.
3.1 Dedicated DDS Configuration
The MicroCSU/DSU can easily be configured for dedicated DDS operation by
means of the DIP switches on the bottom of the enclosure. Set the Line Rate
to match the rate of service to which you subscribe. Set the Mode switches for
Network Clocking. The Rate Converter and Data Format options should be set
as required for your application. The remaining options may also need to be set
depending on your terminal equipment and your application.
3.2 Campus Area Short-Haul Configuration
The unit can also be used for campus area point-to-point short-haul applications
on private twisted-pair wires. Set the Line Rates the same on both units. Set the
Mode switch for the appropriate Transmit Clock Mode for your application.
Internal, External, and Looped Clock Modes are available. Set the remaining
options as needed by your terminal equipment or your application.
3.3 Network Interface Connection
The Network Interface is an 8-position modular connector. Connect this port to
the RJ-48S jack provided by the digital data service provider. If you are using the
MicroCSU/DSU for private short-haul communication, the twisted-pair cable will
connect to this port. See Appendix B for the pin assignments of this connector.
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