About the Product
All earlier versions of Campus products are manufactured to operate at a single HDSL transmission rate, while the Campus-RS transmission rate is user-selectable. To support compatibility with earlier Campus Products, the following configuration options must be set on the Campus-REX:
•Set the HDSL Operating Mode to Standard Mode.
•Set the Standard Mode HDSL Rate to T1, E1, or 768, to match the rate of the earlier product.
If a Campus-RS unit is connected over an HDSL link to an earlier Campus product, and if either unit has the HDSL Transceiver (XCVR) Mode set to AUTO, the HDSL link may not operate properly.
When operating the Campus-RS product with an earlier version of the Campus products, to avoid any problems with link startup or operation, it is recommended that the Transceiver Mode be set as follows:
•Campus-RS = MASTER
•Campus E1/T1/768 = SLAVE
If one or both units are already set to AUTO and the HDSL link is active, disconnect the HDSL link, change the settings as recommended, and reconnect the link. This will assure the link integrity on any subsequent startups.
This situation does not apply to a circuit with two Campus-RS units. You may leave the units set to their default setting of AUTO, and they will operate properly.
For information on setting these options, see “Set the HDSL Operating Mode” on page 3-7.
Campus-REX RS Interface Card User Manual | 1-3 |