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®
SuperStack
(3C16441A) User Guide
DUA1644-0AAA03
I
NTRODUCTION
®
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
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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.
3 Baseline Hub 12-Port TP (3C16440A) and 24-Port TP
3 C 1
6 4 4
1 A S
u p e
r S t a
c k ®
3
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.
1
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Table of Contents
Related Manuals for 3Com SuperStack 3 3C16440A
Summary of Contents for 3Com SuperStack 3 3C16440A
- Page 1 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 ®...
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Page 2: Front Panel
OW TO SE THE Numbered elements in this diagram refer to numbered sections in the text. These numbers, in bold, are used as references. Front Panel 1 12 or 24 RJ45 10Base-T Ports WARNING: RJ-45 Ports. These are shielded RJ-45 data sockets. They cannot be used as standard traditional telephone sockets, or to connect the unit to a traditional PBX or public telephone network. -
Page 3: Rear Panel Connections
Redundant Power System. 10 Transceiver Module Slot A variety of 3Com plug-in Transceiver Modules can be installed in the Baseline Hub. Transceiver Modules provide direct network connections to different media. Contact your supplier for information on the latest Mod- ules. -
Page 4: Safety Information
AFETY NFORMATION Please read the following safety information carefully before installing the Baseline Hub. WARNING: Installation and removal of the unit must be carried out by qualified personnel only. The unit must be connected to an earthed (grounded) outlet to comply with international safety standards. -
Page 5: Related Standards
OUNTING The Baseline Dual Speed Hub is supplied with two mounting brackets and four screws. These are used for rack mounting the unit. When mounting the unit, you should take note of the guidelines given in “Positioning the Baseline Hub”on page 3. The Baseline Dual Speed Hub is 1U high and will fit a standard 19-inch rack. -
Page 6: Limited Warranty
3Com's response to a request for telephone technical support will be in the form of a return call from a 3Com representative by close of business the following business day, defined as 9 a.m. to 5 p.m., local time, Monday through Friday, excluding local holidays. -
Page 7: Echnical Support
Browse the 3Com web site on http://www.3com.com Please have your product model name, part number, hardware revision number and serial number along with all relevant details of the problem to hand before calling your Network Supplier or 3Com on the numbers below. Country... -
Page 8: Legal Notices
Improving our environmental record on a continual basis The SuperStack 3 Baseline Hub is part of the extensive SuperStack 3 range of 3Com products. This range includes hubs, switches, power systems and other networking equipment, and is continually being developed. Contact your supplier for the latest product information and to order these products.