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Campus-REX RS Interface Card User Manual 1-3
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.
For information on setting these options, see “Set the HDSL Operating
Mode” on page 3-7.
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.
CAD1069i5.book Page 3 Thursday, May 30, 2002 7:32 AM