Caution:
Observe the safety precautions in this
section when installing or maintaining your router to avoid bodily injuries or
device impairment caused by improper actions.
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Maintain an indoor temperature
in the range 0 to 40 C (32 to 104 F) and a humidity level in the range 5 to 90%.
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Keep the
router away from radio transmitting stations,
radar stations, and high-frequency devices. Use electromagnetic shielding if
necessary.
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Do not put the router on an
unstable table or platform.
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Make sure that the workbench
has a good ventilation system and is properly grounded.
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Wear an ESD-preventive wrist
strap during installation, making sure that it has good skin-contact.
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Reserve adequate clearance at
the air intake and exhaust vents for ventilation.
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For power supply, use a single-phase
three-line power socket with a neutral point or use a universal PC power
socket, making sure that the neutral point is well connected to building
ground.
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Make sure the correct voltage
is used.
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Put a lightning arrester at the
front end of the power input to enhance its lightning protection. To this end,
put a special lightning arrester at the front end of signal cables that are led
outdoors, such as ISDN, telephone, and T1 cables.
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Do not open the chassis when
the router is operating or when electricity hazards are present to avoid
electrical shocks. Before you open the chassis, obtain the permission of your
sales agent.
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Correctly connect the interface
cables. Do not connect a telephone cable (including the ISDN cable) to a serial
port.
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Do not hot swap any cable.
You can place your
router on a sturdy tabletop or workbench or mount it on a vertical surface.
When placing the
router on a tabletop or workbench,
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Make sure that the tabletop or
workbench is clean, flat, and sturdy.
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Allow 10 cm (3.9 in.) of
clearance around the sides of the chassis.
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Do not stack multiple routers
together.
Mount the router on
a vertical surface with four pan-head screws and the four brackets at the
bottom of the router.
Caution:
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Securely anchor these four
mounting screws in the vertical surface. If the screws are not properly
anchored, strain of the network cable connections can pull the router from the
wall.
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Install the router in such a
position that the LEDs can be read easily.
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Securely fix the external power
supply of the router, preventing the power cord from falling down.
Follow these steps
to mount the router on a wall or other vertical surface:
Step 1: Install four
pan-head screws (with reference to the distance between the four brackets as
shown in Figure
2-1) on a wall or other flat vertical surface, and ensure
that each screw sticks out 6 mm (0.24 in.) on the wall.
Figure 2-1 Chassis bottom
Step 2: Hang the
router on the screws by the four brackets.
Caution:
Properly connect the ground wire before
connecting other cables and shorten it as much as possible to prevent the
router and the connected device from getting damaged during periods of
lightning activities.
The grounding screw
of the chassis PGND is located on the rear panel. Connect this screw to the
earth ground using a ground wire. The grounding resistance must not be greater
than 5-ohm.
I. AC-input power supply
For the AR 18-3X
series, an external AC-input power supply is provided with these
specifications:
Input rated
voltage: 100 to 240 V a.c., 50 to 60 Hz
Input current: 0.5
to 1 A
Output voltage: 12 V d.c.
Output current: 1.25
A
The power supply is
illustrated as follows:
Figure 2-2 Power supply
II. Connecting the AC-input power cord
Step 1: Put the
power switch of the router in OFF position.
Step 2: Connect the
output of the power supply to the power input on the rear panel of the router,
and then insert the input connector of the power supply into an AC power
outlet.
Step 3: Put the
power switch of the router in ON position.
Step 4: Check that the PWR LED on the front panel of the router is ON.
If the LED is OFF, repeat steps 2 through 4.
Caution:
If the PWR LED is still off after you
repeat the steps 2 through 4 several times, refer to “Chapter 4
Troubleshooting” for a solution.
I. Console cable
The console cable
has an RJ45 connector at one end and a DB9 (female) connector at the other end.
Figure 2-3 Console cable assembly
II. Connecting the console cable
Follow these steps
to connect the router to a console terminal:
Step 1: Select a
console terminal.
The console
terminal can be either a standard ASCII terminal with an RS-232 serial
interface or more commonly, a PC.
Step 2: Connect the
console cable.
Power off the
router and the console terminal, and then connect the RS-232 serial port on the
console terminal to the console port on the router using the console cable.
Verify the
connection and power on the router. In normal cases, the startup information is
displayed on the terminal screen. For details, refer to “Chapter 3
Starting and Maintaining the Router”.
I. Ethernet cable
An 10/100Base-TX Ethernet interface is usually connected to an
Ethernet using a category 5 twisted pair cable, as shown in Figure
2-4.
Figure 2-4 Ethernet cable assembly
Ethernet cables fit
into two categories: straight-through and crossover.
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Straight-through cable, at both
ends of which, the wires are crimped in the RJ45 connectors in the same
sequence. The cable is used for connecting different types of devices, such as
a terminal device (PC for example) or router to a Hub or LAN switch.
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Crossover cable, at both ends
of which, the wires are crimped in the RJ 45 connectors in different sequence.
The cable is used for connection of the same type of devices, such as PC to PC
or PC to router.
Caution:
In preparing network cables, shielded
cables are preferred for the sake of electromagnetic compatibility.
II. Connecting an Ethernet cable
Caution:
Read the mark above the port to be
connected carefully before making connection to make sure it is the right port.
The 10/100BASE-T
interface on the AR18-3X series supports MDI/MDIX autosensing. Therefore, you
can connect your router to another device using either straight-through cable
or crossover cable without considering whether the two devices are of the same
type. You can simply connect one end of the network cable to the Ethernet port
on the router and the other end to another device.
The AR 18-3X series
provides WAN interfaces such as ISDN S/T, ADSL, and G.SHDSL. The following
subsections describe how to connect them.
I. ISDN cable
The ISDN S/T cable
is a four-wire twisted pair cable. At both ends of the cable are RJ45
connectors, with pins 3 and 6 for sending data and pins 4 and 5 for receiving
data.
Figure 2-5 ISDN S/T cable
II. Connecting an ISDN cable
Follow these steps
to connect an ISDN cable to the ISDN BRI port:
Step 1: Identify
the model of your router.
Step 2: Identify the
type of the ISDN line provided by your service provider.
Step 3: Connect the
cable.
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For an ISDN U line, you need a
NT1 adapter. Specifically, connect one end of the ISDN S/T cable to the ISDN
port on the NT1 adapter, and the other end to the ISDN BRI port on the router.
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For an ISDN S/T line, you can
directly connect the cable to the ISDN BRI port of the router.
Caution:
Read the mark above the port to be
connected carefully before making connection to make sure it is the right port.
ADSL cables are
telephone cables.
Follow these steps
to connect an ADSL cable.
1)
Connect to the ADSL over POTS
port
In G. Lite mode, no
splitter is required. You can directly connect one end of the telephone cable
to the router and the other end to the PSTN, and connect the telephone set and
router in parallel at the cable distribution box.
In full rate mode,
a POTS splitter is required. Follow these steps to connect the cables:
Step 1: Plug one
end of a telephone cable into the ADSL over POTS port on the router, and the
other end into the internal ADSL port on the splitter.
Step 2: Connect the
telephone to the phone port on the splitter with another telephone cable.
Step 3: Connect the
external ADSL port on the splitter to the PSTN network with a third telephone
cable.
Figure 2-6 Connecting to the ADSL over POTS port
2)
Connect to the ADSL over ISDN
port
When connecting to
an ADSL over ISDN port, you need an ISDN splitter.
Step 1: Plug one
end of a telephone cable into the ADSL port on the router, and the other end
into the internal ADSL port on the splitter.
Step 2: Connect the
ISDN NT1 adapter to the splitter with another telephone cable.
Step 3: Connect the
external ADSL port on the splitter to the ISDN network with a third telephone
cable.
Figure 2-7 Connecting to the ADSL over ISDN port
I. Cable
The G.SHDSL cables
of AR 18-3X series are not shipped with the products. You can purchase them as
needed. The G.SHDSL cables involve two-wire and four-wire cables.
The two-wire
G.SHDSL cables used by the AR 18-33/18-34 are common telephone cables.
The four-wire
G.SHDSL cables used by the AR 18-33E/18-34E are special four-wire telephone
cables, which as shown below have two types, ‘Y’ and ’I’.
Figure 2-8 “Y” type four-wire G.SHDSL cable
In the above figure,
the pins 2, 5 of X1 are connected to pins 3, 4 of X2 respectively, and pins 3,
4 of X1 are connected to pins 3, 4 of X3 respectively.
Table 2-1 Pins
connection of X1 to pins of X2 and X3
|
X1(RJ11)
|
X2(RJ11)
|
X3(RJ11)
|
|
1
|
|
|
|
2
|
|
3
|
|
3
|
3
|
|
|
4
|
4
|
|
|
5
|
|
4
|
|
6
|
|
|
Figure 2-9 “I” type four-wire G.SHDSL cable
II. Connecting the cable
Connect one end of the
telephone cable to the G.SHDSL port on the router and the other end to the PSTN
connected to the DSLAM. Note that you must order a G.SHDSL over PSTN line
you’re your service provider.
After you complete
installation, verify that:
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The proper power supply is
used.
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The grounding wire of the
router is correctly connected.
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The console cable and the power
cord are correctly connected.
