qpcom QP-108EC User manual

www.qpcom.com
User’s Manual
QP-108EC
8 port 10/100M
Switch HUB

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1 Introduction
This manual describes how to install and use the NWay Ethernet Switch. It features 5 or
8
10/100Mbps Auto-Negotiation switch ports, provides the flexibility to fit into your working space
with
network environment. The NWay Ethernet Switch can be used to connect PCs, servers, hubs,
bridges, other switches and routers. It can also acting as a bridge between 10Mbps and 100Mbps
networks segments. Thanks to the switching technology, it supports 10Mbps and 100Mbps
dedicated
bandwidths in each port. The device is built with plug & play, auto-negotiation on all ports,
as well as half and full-duplex operations, store-and- forward transmission scheme, IEEE802.3x flow
control and back pressure operation for easy installation and smooth transition from legacy 10Mbps
to 100Mbps Switched-Network. To ensure maximum safety and good function, please read carefully
and follow all the directions in this manual to get successful installation and operation. It is
recommended that you should have a basic understanding of Local area Networking (LAN) concepts
such as bridging, IEEE802.3 10BASE-T Ethernet, and IEEE802.3u 100BASE-TX Fast Ethernet.
2 Package
Contents
The Ethernet Switch package
includes:
· One 5 or 8 port 10/100Mbps NWay Ethernet Switch
· One DC power adapter (9V 0.5A)
· One User’s Manual
3 Interface
introduce
Front
Panel
The front panel of the switch provides status LEDs for "at-a-glance" system monitoring. The following
table details the functions of the LEDs:
PortandSystemStatusLEDs
LED Condition Status
Power Green Theswitchisreceiving
p
ower.

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Green Indicatesavalidnetwork
connectionbetweentheport
andtheattacheddevice.
Off
Indicatesnonetwork
connectionestablished
betweentheportandthe
attacheddevice.
LAN1~LAN8
Link/Activity
Flashing
Green
Indicates that the port is
transmitting or receiving
data.
Rear
Panel
These Switch 10/100 models feature 5/8 10BASE-T/100BASE-TX ports with RJ-45 connectors
located on the rear panel of the Switch. Each port contains a built-in wiring crossover (MDI-X) that
allows for the use of straight-through twisted-pair cable for connections to devices without built-in
crossover ports (i.e., workstations, printers, etc.).
Side
Panel
The DC power (9V 0.5A) connector is also located on the side panel of the switch.
4 Attach computers to the NWay Ethernet
Switch
The NWay Ethernet Switch has 5 or 8 10/100Mbps (10BASE-T/100BASE-TX) RJ-45 ports that
can
be connected to any workstation or server with a standard Ethernet or Fast Ethernet network
interface.
1. Do not plug a phone jack connector into any of the RJ-45 ports. This may damage the
NWay
Ethernet
Switch.
2. Install a 10/100Mbps (10BASE-T/100BASE-TX) network adapter card and driver in each
computer
you want to network.
3. Prepare twisted-pair cables with RJ-45 plugs. Use Category 5 cable for all connections.
Each
cable cannot exceed 100 meters (328
feet).
4. Attach one end of the cable to the RJ-45 port of the computer's network adapter card and
the
other end to any available port on the Switch.
5. Be sure not to use the MDI-X port and its shared MDI port at same time for any connected
device.

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5 Cascading to another Switch or a Hub
You can cascade the NWay Ethernet Switch to another switch or a hub. (When attaching the
Nway
Ethernet Switch to arouter or other device, verify the port type implemented before connecting any
cabling).
1. Prepare a straight-through Category 5 twisted pair cable with RJ-45 plugs. Make sure the
cable
dose not exceed 100 meters(328 feet).P.S.:Please note that since this switch is Auto
MDIX,
function supported, a crossover cable for installation can replace the straight-through cable. With
the help of auto MDIX, the switch will automatically swap the wiring internally by this switch itself.
2. Connect one end of the cable to the NWay Ethernet Switch's any RJ45 port, which is
convenient
to your
installation.
3. Connect the other end of the cable to a MDI-X port on the other device(not a MDI
port).
Alternatively, you can connect from any RJ45 port on the NWay Ethernet Switch to a MDI port
on
the other device.
4. A crossover cable for installation can replace the straight-through cable for above procedures
with
the help of Auto MDIX
function.
6 RJ45 Ports with Auto
MDI/MDIX
This device supports 10/100 N-Way auto –sensing and auto MDIX for 10Base-T or 100Base
–Tx
connections. In general, MDI port is designed for connecting to another Hub or Switch while MDIX
port
is designed for connecting to a workstation or PC. Therefore, Auto MDI/MDIX is a flexible design
that you can connect any RJ45 port to another Switch or Workstation without changing non-
crossover or crossover cabling.
7
Troubleshooting
The operation of Ethernet Switch can be easily monitored through panel indicators to assist
the
network manager in identifying problems.
Symptom: Link indicator does not light up after making a connection.
Cause: Network interface(e.g., a network adapter card on the attached device), network cable,
or
switch port is defective.
Solution: Verify that the switch and attached device are powered. Be sure the cable is correctly
plugged into both the switch and corresponding device. Verify that the proper cable type is used and
its length does not exceed specified limits. Each twisted-pair cable should not exceed 100 meters
(328 feet). Check the adapter on the attached device and cable connections for possible defects.
Replace the defective adapter or cable if necessary.
Symptom: Power indicator does not light after power adapter is
attached.
Cause: Defective power outlet, power cord, or power
adapter.
Solution: Check the power outlet by plugging in another device that is functioning properly.
Check
the power cord with another device. If these measures fail to resolve the problem, have the unit’s
power adapter replaced by a qualified distributor.