3Com Baseline 2024 Manual del usuario - Página 2
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H
OW TO
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Numbered elements in this diagram refer to numbered sections in
the text. A 24-port unit is shown.
Front Panel
24 RJ-45 10/100 Ports
1
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. Only connect RJ-45
data connectors, network telephony systems, or network
telephones to these sockets. Either shielded or unshielded
data cables with shielded or unshielded jacks can be
connected to these data sockets.
AVERTISSEMENT: Les ports RJ-45. Ceux-ci sont
protégés par des prises de données. Ils ne peuvent pas
être utilisés comme prises de téléphone conventionnelles
standard, ni pour la connection de l'unité à un réseau
téléphonique central privé ou public. Raccorder seulement
connecteurs de données RJ-45, systèmes de réseaux de
téléphonie ou téléphones de réseaux à ces prises. Il est
possible de raccorder des câbles protégés ou non
protégés avec des jacks protégés ou non protégés à ces
prises de don.
WARNUNG: RJ-45-Porte. Diese Steckdose sind
geschützte Datensteckdosen. Sie dürfen weder wie
normale traditionelle Telefonsteckdosen noch für die
Verbindung der Einheit mit einem traditionellem privatem
oder öffentlichem Telefonnetzwerk gebraucht werden.
Nur RJ-45-Datenanscluße, Telefonnetzsysteme or
Netztelefone an diese Steckdosen anschließen. Entweder
geschützte oder ungeschützte Buchsen dürfen an diese
Datensteckdosen angeschlossen werden.
ADVERTENCIA: puertos RJ-45. Son conectores de datos
RJ-45 blindados. No pueden utilizarse como tomas de
teléfono tradicionales estándar ni para conectar la unidad
a una central de conmutación PBX tradicional ni a una
red telefónica pública. Conecte sólo conectores de datos
RJ-45, sistemas de telefonía de red local o teléfonos de
red local a estas tomas. Es posible conectar cables de
datos blindados o sin blindar con clavijas blindadas o sin
blindar a estos conectores de datos.
10BASE-T/100BASE-TX Ports
The Switch has 16 (3C16470B) or 24 (3C16471B) 10/100 Mbps
auto-negotiating ports. To connect a device to the Switch, use
Category 5 unshielded or shielded (screened) 100 Ohm TP cable
(or Category 3 cable for a 10 Mbps connection). The maximum
length of cable for each connection is 100m (328ft). Connect one
U
2016/2024 S
SE THE
1
4
5
8
9
16
17
20
21
WITCH
12
24
3
2
end of the cable to an RJ-45 port on the Switch, and the other
end to the appropriate RJ-45 port on the connecting device.
Each port on the Switch is auto-negotiating: its speed and duplex
mode (half duplex or full duplex) are automatically determined by
the capabilities of the connected device.
Each port supports automatic MDI/MDI-X detection and can be
connected to either a 10BASE-T or a 100BASE-TX device.
f you connect two Switch units together, the link
I
between them operates at 100 Mbps full duplex. You
must use Category 5 cable when connecting the units.
CAUTION: The Switch supports full duplex auto-negotia-
!
tion. If the connected device does not support auto-nego-
tiation, the Switch will operate in half duplex mode (even
if the device is operating in full duplex mode). In such a
configuration, you may notice some degradation of net-
work performance. 3Com recommends that you use
devices that are capable of auto-negotiation (and that
you ensure that auto-negotiation is enabled, if it is a con-
figurable option).
Activity/Link/Speed Status LEDs
2
The first (top) and third row of LEDs, which are colored yellow or
green, show the activity and speed status of the related ports:
Status
Meaning
On
The link has been established.
Flashing
Packets are being received or transmitted on the port.
Off
If the link has not been established, either nothing is
connected to the port, or there is a problem:
Check that the attached device is powered on.
■
Check that the cable is the correct type and is not faulty.
■
If these checks do not identify the cause of the problem, it
may be that the unit or the device connected to the port is
faulty. Contact your supplier for further advice.
Green
The link is operating at 100 Mbps.
Yellow
The link is operating at 10 Mbps.
Duplex Status LEDs
3
The second and fourth (bottom) row of Status LEDs, which are
colored yellow, show the duplex status of the related ports:
Status
Meaning
On Yellow
The port is operating in full-duplex mode.
Off
The port is operating in half-duplex mode.
2
Baseline Switch 2024
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5