About the Product

When connecting to another Campus-RS unit, the three standard HDSL transmission rates are available. In addition, the Campus system can be configured to support an extended HDSL Operating Mode, as follows:

•Over a single-loop connection, the Line Unit supports rates from 64 kbps to 2304 kbps in 64 kbps increments, depending on the interface card.

•Over a dual-loop connection, the Line Unit supports rates from 256 kbps to 4608 kbps in 128 kbps increments, depending on the interface card.

While the Line Unit supports all the rates listed above, the actual rates available depends on the interface card installed in the Line Unit. For example, the Campus Fractional Interface Card support the full range of transmission rates, while the CSU/DSX-1 Interface Card only supports the T1 standard rate. The User Manual for the Interface Card provides a list of rates supported by the card.

The transmission rate you select depends on the type of copper infrastructure and the physical layout of the network. The extended HDSL Operating Modes provide a way to make trade-offs between the reach of the HDSL line and the transmission rate.

The default setting for the HDSL Operating Mode depends upon the interface card. If necessary, change the HDSL Operating Mode and associated parameters through the system configuration menus. Instructions for using the menus are in the User Manual for the interface card mated with the Line Unit.

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May 29, 2002

Campus-RS Line Unit User Manual