14
SDSL NETWORK EXTENDER 2000
NOTES
The length and quality of the cabling between the Units
directly affects the process by which they establish an
SDSL link with each other. Depending on these cable
characteristics, it might take anywhere from one to five
minutes for the Units to establish the link. If the cabling is
too long to support the data rate set on the Provider Unit,
the Units will not be able to link up at all. If this happens,
simply set the Provider Unit’s DIP switch for the next-lower
data rate and the Units will automatically try to link again.
Whenever an Extender Unit boots up without an SDSL
connection, its Link, Tx, and Rx LEDs will be steadily lit until
the SDSL connection is established or the Unit is powered
down. (These LEDs won’t light back up, however, if an
SDSL connection is lost after having been established.)
When a Provider Unit loses the SDSL connection, it will
drop its Ethernet link signal (no matter what state the Link
LED is in!) so that, if the attached Ethernet device is
capable of generating SNMP traps or other remote alerts,
your network-administration team can be notified that the
link has gone down.
8. Run Ethernet cable from an Ethernet hub, router,
switch, etc., to the RJ-45 jack marked “Ethernet”
on the Provider Unit’s rear panel. (This cable
should be standard 10BASE-T cable with RX+ on
Pin 1, RX– on Pin 2, TX+ on Pin 3, and TX– on
Pin 6.) When you do this, the Provider Unit’s Link
LED should come back ON, verifying the physical
Ethernet link, and any or all of the Tx, Rx, and
Collision LEDs might begin flashing.
