Cisco 1812j Manual

							 
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Chapter 3      Chassis Installation Procedures
  Installing the Chassis Ground Connection
Figure 3-1 shows the underside of a Cisco 1800 series fixed-configuration router and the locations of the 
wall-mount holes.
Figure 3-1 Mount Holes on Underside of Cisco 1800 Series Fixed-Configuration Router Chassis
After you install the router, you must connect the chassis to a reliable earth ground. For the chassis 
ground connection procedures, see the 
“Installing the Chassis Ground Connection” section on page 3-3.
Installing the Chassis Ground Connection
WarningThis equipment must be grounded. Never defeat the ground conductor or operate the equipment in the 
absence of a suitably installed ground conductor. Contact the appropriate electrical inspection 
authority or an electrician if you are uncertain that suitable grounding is available. Statement 1024
You must connect the chassis to a reliable earth ground; the ground wire must be installed in accordance 
with local electrical safety standards. 
 For NEC-compliant grounding, use size 14 AWG (2 mm2) or larger copper wire and an appropriate 
user-supplied ring terminal with an inner diameter of 1/4 inch (5 to 7 millimeters).
 For EN/IEC 60950–compliant grounding, use size 18 AWG (1 mm2) or larger copper wire and an 
appropriate user-supplied ring terminal.
Follow these steps to install the ground connection:
1Holes for wall-mounting
1
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Chapter 3      Chassis Installation Procedures
  Installing the Chassis Ground Connection
Step 1Strip one end of the ground wire to the length required for the ground lug or terminal.
Step 2Crimp the ground wire to the ground lug or ring terminal, using a wire crimper of the appropriate size.
Step 3Attach the ground lug or ring terminal to the chassis. For a ground lug, use the provided two screws with 
captive locking washers. For a ring terminal, use one of the screws provided. Tighten the screws to a 
torque of 8 to 10 in-lb (0.9
 to 1.1 N-m).
NoteTo see an illustration of this procedure, go to the following URL:  
 
http://www.cisco.com/en/US/docs/routers/access/1800/1841/hardware/quick/guide/1800qsg.html
Step 4Connect the other end of the ground wire to a known reliable earth ground point at your site.
After you install and properly ground the router, you can connect the power wiring, the WAN and LAN 
cables, and the cables for administrative access as required for your installation. For information about 
connecting the cables, see Chapter 4, “
Power, Cable, and Antenna Connection Procedures.” 
						

							CH A P T E R
 
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4
Power, Cable, and Antenna Connection 
Procedures
This chapter describes how to connect your Cisco 1800 series fixed-configuration router to a power 
source and to networks and external devices. It includes the following sections:
 Power Connections, page 4-1
 Connecting WAN and LAN Cables, page 4-2
 Connecting to a Console Terminal or Modem, page 4-5
 Connecting the Radio Antennas to the Wireless Router, page 4-8
NoteTo see translations of the warnings that appear in this publication, see the Regulatory Compliance and 
Safety Information for Cisco 1800 Integrated Services Routers (Fixed) document and for wireless 
routers, the Declarations of Conformity and Regulatory Information for Cisco Access Products with 
802.11a/b/g and 802.11b/g Radios document that accompany your router.
WarningOnly trained and qualified personnel should be allowed to install, replace, or service this equipment. 
Statement 1030
WarningDo not work on the system or connect or disconnect cables during periods of lightning activity. 
Statement 1001
Power Connections
This section explains how to connect AC power to a Cisco 1800 series fixed-configuration router. It 
covers the following topics:
 Connecting Routers to AC Power, page 4-2
 Connecting WAN and LAN Cables, page 4-2
WarningRead the installation instructions before connecting the system to the power source. Statement 1004 
						

							 
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Chapter 4      Power, Cable, and Antenna Connection Procedures
  Connecting WAN and LAN Cables
NoteThe installation must comply with all required electrical codes applicable at the installation site.
Connecting Routers to AC Power
Connect your router to a 15A, 120-VAC (10A, 240-VAC) circuit with overcurrent protection.
NoteThe input voltage tolerance limits for AC power are 90 and 264 VAC.
WarningThis product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that 
the protective device is rated not greater than:
 
15A, 120VAC (10A, 240VAC). Statement 1005
WarningThis equipment has been designed for connection to TN and IT power systems. Statement 1007
WarningThis equipment must be grounded. Never defeat the ground conductor or operate the equipment in the 
absence of a suitably installed ground conductor. Contact the appropriate electrical inspection 
authority or an electrician if you are uncertain that suitable grounding is available. Statement 1024
WarningThis equipment must be installed and maintained by service personnel as defined by AS/NZS 3260. 
Incorrectly connecting this equipment to a general-purpose outlet could be hazardous. The 
telecommunications lines must be disconnected 1) before unplugging the main power connector or 2) 
while the housing is open, or both. Statement 1043
WarningWhen installing or replacing the unit, the ground connection must always be made first and 
disconnected last. Statement 1046
Connecting WAN and LAN Cables
This section describes how to connect the WAN, LAN, and voice interface cables. It covers the 
following topics:
 Preparing to Connect to a Network, page 4-3
 Ports and Cabling, page 4-4
 Connection Procedures and Precautions, page 4-5
NoteEthernet cables and transceivers can be ordered from Cisco Systems. For ordering information, contact 
customer service. For cable pinouts, refer to the
 Cisco Modular Access Router Cable Specifications 
document. 
						

							 
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Chapter 4      Power, Cable, and Antenna Connection Procedures
  Connecting WAN and LAN Cables
WarningTo avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network 
voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Some 
LAN and WAN ports both use RJ-45 connectors. Use caution when connecting cables. Statement 1021
WarningHazardous network voltages are present in WAN ports regardless of whether power to the unit is OFF 
or ON. To avoid electric shock, use caution when working near WAN ports. When detaching cables, 
detach the end away from the unit first. Statement 1026
WarningDo not use this product near water; for example, near a bath tub, wash bowl, kitchen sink or laundry 
tub, in a wet basement, or near a swimming pool. Statement 1035
WarningNever install telephone jacks in wet locations unless the jack is specifically designed for 
wet locations. Statement 1036
WarningNever touch uninsulated telephone wires or terminals unless the telephone line has been 
disconnected at the network interface. Statement 1037
WarningTo report a gas leak, do not use a telephone in the vicinity of the leak. Statement 1039
WarningBefore opening the unit, disconnect the telephone-network cables to avoid contact with 
telephone-network voltages. Statement 1041
WarningThis equipment must be installed and maintained by service personnel as defined by AS/NZS 3260. 
Incorrectly connecting this equipment to a general-purpose outlet could be hazardous. The 
telecommunications lines must be disconnected 1) before unplugging the main power connector or 2) 
while the housing is open, or both. Statement 1043
Preparing to Connect to a Network
When setting up your router, consider distance limitations and potential electromagnetic interference 
(EMI) as defined by the applicable local and international regulations. 
See the network connection considerations for the following network interfaces:
 Ethernet Connections
 ISDN BRI Connections
See the following online documents for more information about network connections and interfaces:
 Cisco Interface Cards Hardware Installation Guide
 Cisco Modular Access Router Cable Specifications 
						

							 
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Chapter 4      Power, Cable, and Antenna Connection Procedures
  Connecting WAN and LAN Cables
Ethernet Connections
The IEEE has established Ethernet as standard IEEE 802.3. The Cisco 1800 series fixed-configuration 
routers support the following Ethernet implementations:
 100BASE-T—100-Mbps full-duplex transmission over a Category 5 or better unshielded 
twisted-pair (UTP) cable. Supports the Ethernet maximum length of 328
 feet (100 meters).
 10BASE-T—10-Mbps full-duplex transmission over a Category 5 or better unshielded twisted-pair 
(UTP) cable. Supports the Ethernet maximum length of 328
 feet (100 meters).
See the Cisco Modular Access Router Cable Specifications online document for information about 
Ethernet cables, connectors, and pinouts.
ISDN BRI Connections
The ISDN BRI S/T interface on the Cisco 1801, Cisco 1802, Cisco 1803 and Cisco 1812 routers provides 
an ISDN BRI connection for dial-backup purposes. The BRI S/T interface requires an external Network 
Terminator 1 (NT1).
Use a BRI cable (not included) to connect the BRI S/T interface card directly to an ISDN NT1. Ta b l e 4-1 
lists the specifications for ISDN BRI cables. Also, see the Cisco Modular Access Router Cable 
Specifications online document for pinouts. This document is located on Cisco.com.
Ports and Cabling
Ta b l e 4-2 summarizes WAN and LAN connections for Cisco 1800 series fixed-configuration routers. 
The connections summarized in Ta b l e 4-2 are also described in detail in the following documents:
 Cisco Modular Access Router Cable Specifications
 Cisco Network Modules Hardware Installation Guide
 Cisco Interface Cards Hardware Installation Guide
Ta b l e 4-1 ISDN BRI Cable Specifications
SpecificationHigh-Capacitance CableLow-Capacitance Cable
Resistance (at 96 kHz)160 ohm/km160 ohm/km
Capacitance (at 1 kHz)120 nF1/km
1. nF = nanofarad
30 nF/km
Impedance (at 96 kHz)75 ohm150 ohm
Wire diameter0.024 in. (0.6 mm)0.024 in. (0.6 mm)
Distance limitation32.8 ft (10 m)32.8 ft (10 m) 
						

							 
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Chapter 4      Power, Cable, and Antenna Connection Procedures
  Connecting to a Console Terminal or Modem
Connection Procedures and Precautions
Follow these steps to connect your router to the network:
Step 1Confirm that the router is powered off.
Step 2Connect each WAN or LAN cable to the appropriate connector on the chassis. For locations of the 
chassis WAN and LAN ports, see the 
“Chassis Views” section on page 1-7.
 Position the cables carefully, so that they do not put strain on the connectors. 
 Bundle the cables so that they do not intertwine.
 Inspect the cables to make sure that the routing and bend radiuses are satisfactory. Reposition 
cables, if necessary.
 Install cable ties in accordance with site requirements.
Step 3Connect the other end of each WAN or LAN cable to the appropriate network device. See Ta b l e 4-2 for 
information about which network devices to connect each cable to.
NoteFor cable pinouts, see the Cisco Modular Access Router Cable Specifications document.
Connecting to a Console Terminal or Modem
Your router has asynchronous serial console and auxiliary ports for system management. These ports 
provide administrative access to your router either locally (with a console terminal or PC) or remotely 
(with a modem).
Cisco Systems provides the following cables for connecting your router to a console terminal, PC, or 
modem:
Ta b l e 4-2 WAN and LAN Connections
Port or ConnectionPort Type, Color1
1. Cable color codes are specific to Cisco cables.
Connection Device Cable
Ethernet2
2. Ethernet connection information applies to both WAN ports and Ethernet LAN switch ports.
RJ-45, yellowEthernet hub, Ethernet switch, or 
Ethernet network interface 
card
 (NIC)
Category 5 or higher Ethernet 
ADSLRJ-11C/CA11A, 
lavenderNetwork demarcation device for 
service provider DSL interfaceRJ-11 straight-through
SHDSLRJ-11C/CA11A, 
lavender, RJ-14Network demarcation device for 
service provider DSL interfaceRJ-11 straight-through for 2-wire 
RJ-14 straight-through for 4-wire
BRI S/T WAN  
(external NT1)
RJ-45/CB-1D, orangeNT1 device or private integrated 
services network exchange (PINX)RJ-45 straight-through
Analog ModemRJ-11PSTNRJ-11 straight-through 
						

							 
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Chapter 4      Power, Cable, and Antenna Connection Procedures
  Connecting to a Console Terminal or Modem
 One console cable (RJ-45-to-DB-9, blue)
 One DB-9-to-DB-25 adapter
This section describes how to connect a console terminal or PC to the console port and how to connect 
a modem to the auxiliary port. 
Ta b l e 4-3 summarizes the system management connections.
For information about cable pinouts, see the Cisco Modular Access Router Cable Specifications 
document. 
WarningTo avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network 
voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Some 
LAN and WAN ports both use RJ-45 connectors. Use caution when connecting cables. Statement 1021
WarningHazardous network voltages are present in WAN ports regardless of whether power to the unit is OFF 
or ON. To avoid electric shock, use caution when working near WAN ports. When detaching cables, 
detach the end away from the unit first. Statement 1026
WarningBefore opening the unit, disconnect the telephone-network cables to avoid contact with 
telephone-network voltages. Statement 1041
Console and Auxiliary Port Considerations
The router includes an asynchronous serial console port and an auxiliary port. The console and auxiliary 
ports provide access to the router either locally (using a console terminal connected to the console port) 
or remotely (using a modem connected to the auxiliary port). This section provides important 
information about cabling that you should consider before you connect the router to a console terminal 
or a modem.
The main difference between the console port and the auxiliary port is that the auxiliary port supports 
hardware flow control and the console port does not. Flow control paces the transmission of data 
between a sending device and a receiving device. Flow control ensures that the receiving device can 
absorb the data sent to it before the sending device sends more. When the buffers on the receiving device 
are full, a message is sent to the sending device to suspend transmission until the data in the buffers has 
been processed. Because the auxiliary port supports flow control, it is ideally suited for use with the 
high-speed transmissions of a modem. Because console terminals send data at slower speeds than 
modems, the console port is ideally suited for use with console terminals.
Ta b l e 4-3 System Management Connections
Port Color Connected DeviceCable
ConsoleLight bluePC or ASCII terminal communication port  
(usually labeled COM) 
RJ-45-to-DB-9 console cable
AuxiliaryBlackModem for remote accessRJ-45-to-DB-9 console cable with a 
DB-9-to-DB25 adapter 
						

							 
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Chapter 4      Power, Cable, and Antenna Connection Procedures
  Connecting to a Console Terminal or Modem
Console Port Connections
The router has an EIA/TIA-232 asynchronous serial console port (RJ-45). Depending on the cable and 
the adapter used, this port will appear as a DTE or DCE device at the end of the cable. 
Your router is supplied with an RJ-45-to-DB-9 adapter cable for connecting to a PC that is running 
terminal emulation software. 
To connect the router to an ASCII terminal, use the RJ-45-to-DB-9 cable and a DB-9-to-DB-25 adapter.
The default parameters for the console port are 9600 baud, 8 data bits, 1 stop bit, and no parity. The 
console port does not support hardware flow control. For detailed information about installing a console 
terminal, see the 
“Connecting to a Console Terminal or Modem” section on page 4-5. 
For cable and port pinouts, see the online document Cisco Modular Access Router Cable Specifications. 
This document is located on Cisco.com.
Connecting to the Console Port
If a console terminal or PC is connected to the console port, you can configure the router locally. Follow 
these steps to connect a console terminal or PC that is running HyperTerminal or similar terminal 
emulation software to the console port on the router:
Step 1Use the blue RJ-45-to-DB-9 console cable to connect the router to a terminal. 
NoteOn the Cisco 1800 series fixed-configuration routers, the console port is color-coded blue.
Step 2Configure your terminal or terminal emulation software for 9600 baud (default), 8 data bits, 1 stop bit, 
and no parity; set flow control to “none.” 
NoteBecause hardware flow control is not supported on the console port, do not connect modems to 
the console port. Connect modems only to the auxiliary port.
Auxiliary Port Connections
The router has an EIA/TIA-232 asynchronous serial auxiliary port (RJ-45) that supports flow control. 
Depending on the cable and the adapter used, this port appears as a DTE or DCE device at the end of the 
cable. 
Your router is supplied with a DB-9-to-DB-25 adapter for connecting to a modem.
For detailed information about connecting devices to the auxiliary port, see the “Connecting to a Console 
Terminal or Modem” section on page 4-5.
For cable and port pinouts, see the Cisco Modular Access Router Cable Specifications online document 
on Cisco.com. 
						

							 
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Chapter 4      Power, Cable, and Antenna Connection Procedures
  Connecting the Radio Antennas to the Wireless Router
Connecting to the Auxiliary Port
If a modem is connected to the auxiliary port, a remote user can dial in to the router and configure it. 
Follow these steps to connect a modem to the auxiliary port on the router:
Step 1Use the black RJ-45-to-DB-25 modem cable or the RJ-45-to-DB-9 console cable with a DB-9 to DB-25 
adapter to connect the router to a modem.
Step 2Make sure that your modem and the router auxiliary port are configured for the same transmission speed 
(up to 115,200 bps is supported) and hardware flow control with data carrier detect (DCD) and data 
terminal ready (DTR) operations.
Connecting the Radio Antennas to the Wireless Router
If your router has the wireless LAN option, connect the antennas by screwing the antenna connectors in 
a clockwise direction onto the reverse-polarity threaded Neill-Concelman (RP-TNC) connectors on the 
back panel of the router. 
Figure 4-1 shows an example of how to connect the swivel-mount dipole 
antennas to the router.
NoteFor more information about the antennas compatible with the Cisco 1800 series fixed-configuration 
routers, see the “Supported Cisco Radio Antennas (Wireless Models Only)” section.
Figure 4-1 Connecting Swivel-Mount Dipole Antennas to the Router RP-TNC Connectors
After you have attached the antennas, you must orient them. For best radio performance, the dipole 
antennas are usually oriented so that they are perpendicular to the ground. 
Figure 4-2 shows this 
orientation for a router that is mounted in a rack or placed on a horizontal surface. A wall-mounted router 
would typically have the dipole antennas pointing straight up or straight down.