The SuperStack
®
3 Baseline Hub is a flexible unmanaged Ethernet
repeater which is very easy to use. It can be used in a variety of ways,
from building a small network to expanding a larger, more established
network.
The SuperStack 3 Baseline Hub 12-port TP (3C16440A) has 12 dedicated
shielded twisted pair (TP) ports on the front panel. The SuperStack 3
Baseline Hub 24-port TP (3C16441A) has 24 dedicated shielded twisted
pair (TP) ports on the front panel. The rear panel also has a slot for a
3Com Transceiver Module; if fitted, the Module will operate in addition to
the TP ports. A range of different media Transceiver Modules is available
from 3Com. Contact your supplier for details.
The Baseline Hub comes with:
!
One power cord for use with the Baseline Hub
!
Four standard height and two reduced height self-adhesive rubber
pads
!
One rack mounting kit
!
A card with details of online registration
The Baseline Hub is suitable for office use where it can be free standing or
rack-mounted (in a wiring closet or equipment room). The hub can be
powered either from the AC mains supply, or through an optional 3Com
®
SuperStack Advanced Redundant Power System (3C16071/A/B). Contact
your supplier for details.
Network Connections
The Baseline Hub can be used stand-alone or linked with other hubs.
Because each Baseline Hub is a single IEEE 802.3 Ethernet repeater hub,
there can be a maximum of four Baseline Hubs between any two pieces
of Data Terminal Equipment (DTE) (workstations or other equipment) on
the same network.
The Baseline Hub is ready to use. You can connect the Hub to any DTE
fitted with a 10BASE-T network adapter or a 10BASE-T transceiver.
Connect one end of the twisted pair cable to the RJ45 port on the unit
and the other end to the RJ45 port on your network adapter or
transceiver. You can attach up to 12 or 24 twisted pair segments to the
front of the unit.
The Baseline Hub can use both shielded 150 Ohm, and unshielded or
shielded 100 Ohm twisted pair cables. To remain within 802.3 10BASE-T
rules, the maximum length of cable between the unit and any DTE should
not be greater than 100m (328ft). Consult your supplier's technical
support department if you need to use twisted pair cables over greater
distances.
You can fit one of the 3Com Transceiver Modules into the slot on the rear
panel to provide an additional, 13th or 25th port.
You can connect the Baseline Hub to any other 10BASE-T hub or unit
using port 12 or 24, to form an inter-repeater link. You must switch port
12 or 24 to MDI to bypass the internal cross-over normally implemented
by 10BASE-T unit ports. Refer to “MDI Switch” for information on con-
necting hubs and switching port 12 or 24 between MDI and MDIX.
INTRODUCTION
SuperStack
®
3 Baseline Hub 12-Port TP (3C16440A) and 24-Port TP
(3C16441A) User Guide
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3C
16441A
SuperStack
®
3
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