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This chapter provides information on the following topics:
This section contains information on warnings associated with using your router and on electrostatic discharge (ESD).
Before installing the router, read the following warnings:
![]() | Warning Only trained and qualified personnel should be allowed to install or replace this equipment. |
![]() | Warning Read the installation instructions before you connect the system to its power source. |
![]() | Warning Before working on a system that has a standby/on switch, turn the power to standby and unplug the power cord. |
![]() | Warning Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces, and watches). Metal objects will heat up when connected to power and ground and can cause serious burns or weld the metal object to the terminals. |
![]() | Warning Ultimate disposal of this product should be handled according to all national laws and regulations. |
![]() | Warning To 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. |
Figure 2-1 shows the Cisco 805 router ports that include SELV circuits. For a definition of SELV and TNV, see "Terms and Acronyms" in "About this Guide."

Always use the following ESD-prevention guidelines when removing and replacing components:
![]() | Caution Periodically check the resistance value of the antistatic strap, which should be between 1 and 10 megohms (Mohms). |
You need to provide the following equipment:
Figure 2-2 shows the items included with your router. If any of the items is missing or damaged, contact your customer service representative.

To install the router, perform the following tasks in the following order:
1. Connect an Ethernet device.
2. Connect a serial device.
3. Connect a terminal or PC (for software configuration or router troubleshooting).
4. Connect the power supply.
5. Mount the router.
6. Verify the router installation.
You can connect the following devices to the Ethernet port:
Table 2-1 lists the Ethernet devices you can connect to the router with the yellow Ethernet cable and the appropriate settings of the router HUB/NO HUB button and the hub equivalent of the HUB/NO HUB button. The default setting of the router HUB/NO HUB button is HUB (in).
| Network Device Connected to Router | Router HUB/NO HUB Button Setting | Hub Button Setting1 |
|---|---|---|
Hub with equivalent to router HUB/NO HUB button | HUB (in) | MDI (in) |
Hub with equivalent to router HUB/NO HUB button | NO HUB (out) | MDI-X (out) |
Hub without equivalent to router HUB/NO HUB button | NO HUB (out) | MDI-X (out) |
Server, PC, or workstation | NO HUB (out) | - |
Before connecting a hub, refer to Table 2-1 to determine how to set the router
HUB/NO HUB button and the hub equivalent of the HUB/NO HUB button if applicable.
Follow the steps in Figure 2-3 to connect a hub.

Before connecting the server, PC, or workstation, do the following:
Follow the steps in Figure 2-4 to connect a server, PC, or workstation.

You can connect any one of several serial devices to the router serial port. For more information, see the "DTE or DCE" section in "Selecting a Serial Cable."
Table 2-2 describes the devices most commonly connected to the router serial port and how these devices are used.
| Serial Device | WAN Options | WAN Encapsulation (Framing) | Network Type |
|---|---|---|---|
Asynchronous modem | Asynchronous dial-up line | Point-to-Point Protocol (PPP) |
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Channel service unit/data service unit (CSU/DSU) |
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Follow the steps in Figure 2-5 to connect a modem or CSU/DSU.
![]() | Caution The Cisco 805 router does not support the Australian IUT requirement, which specifies that the router must communicate for 1/2 hour after a power failure. If a power failure occurs, the Cisco 805 router stops communicating with other devices. |

You can connect either a terminal or PC from which you can configure the software or troubleshoot problems with the router. Follow the steps in Figure 2-6.

Follow the steps in Figure 2-7 to connect the power supply.
![]() | Warning The device is designed to work with TN power systems. |
![]() | Warning This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that a fuse or circuit breaker no larger than 120 VAC, 15A U.S. (240 VAC, 16A international) is used on the phase conductors (all current-carrying conductors). |
![]() | Warning This equipment is intended to be grounded. Ensure that the host is connected to earth ground during normal use. |

You can mount the router on one of the following surfaces:
You can mount your router on a table or other horizontal surface. Use the following guidelines:
You can mount your router on a wall or other vertical surface by using the molded mounting brackets on the router bottom and two number-six, 3/4-inch (M3.5 x 20 mm) screws. You must provide the screws. Figure 2-8 shows the mounting brackets.
![]() | Caution If the wall to which you mount your router is drywall, use two hollow wall-anchors (1/8 inch with 5/16-inch drill bit or M3 with 8-mm drill bit) to secure the screws. If the screws are not properly anchored, the strain of the network cable connections could pull the router from the wall. |

When mounting the router, the following conditions must be met:
To mount the router, follow the steps in Figure 2-9. The last page of this manual provides a template for measuring the distance between the screws.

Verify the power, Ethernet, and serial connections by checking the LEDs. Table 2-3 describes the normal pattern for each LED and what to do if you get an abnormal pattern.
| LED | Normal Pattern | Explanation | If Abnormal Pattern |
|---|---|---|---|
On | Power is supplied to the router. Router completes self-test procedure and begins operating. | If off, refer to "Troubleshooting." | |
On | (LINK LED is located on router back panel.) Ethernet device is connected. | If off, toggle the HUB/NO HUB button (if set to HUB [in], reset to NO HUB [out] or vice versa).1 If still off, refer to "Troubleshooting." | |
On | Serial interface is up, and carrier signal is detected.2 | If off for a long time, refer to "Troubleshooting." |
| 1For information on how the setting of the router HUB/NO HUB button might be affected by the setting of an equivalent hub button, see the "Connecting an Ethernet Device" section earlier in this chapter. 2You must configure the serial interface before this LED turns on. For more information on configuring the serial interface, see the Cyclone 805 Router Software Configuration Guide. |
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Posted: Wed Jun 16 11:27:13 PDT 1999
Copyright 1989-1999©Cisco Systems Inc.