Table Of Contents
Installing the Cisco uBR925 Cable Access Router
Installation Checklist
Physical Placement
Verifying Power Requirements
Connecting Power
Connecting to the Cable System
Connecting to Telephones or Fax Devices
Connecting to the Computer (Ethernet)
Connecting to the Computer (USB)
Router Power On and Initialization Sequence
Verifying Installation
Installing the Cisco uBR925 Cable Access Router
This chapter contains the following sections that provide instructions on installing the router, initial power on, and verifying the installation:
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Installation Checklist
•Physical Placement
•Verifying Power Requirements
•Connecting to the Cable System
•Connecting to Telephones or Fax Devices
•Connecting to the Computer (Ethernet)
•Connecting to the Computer (USB)
•Router Power On and Initialization Sequence
•Verifying Installation
Caution Before proceeding with the installation, verify that you have fulfilled all the requirements listed in
"Preparing for Installation." Also read and follow the safety guidelines in the
"Safety" section, as well as those contained in this chapter.
Installation Checklist
Table 3-1 presents a checklist, identifying the installation tasks to complete at each subscriber site. Use this table as a guide while installing the Cisco uBR925 cable access router.
Table 3-1 Installation Checklist
Checked Off
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Task
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For More Information, See...
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Verify that the PC to be connected to the cable access router has either a USB port or an Ethernet NIC. Ensure that all other PC prerequisites are met.
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"Site Requirements" section
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Ensure the selected location to install the cable access router is free of dust and meets all requirements.
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"Environmental" section
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Install the Cisco uBR925 cable access router:
•Close to the cable drop connection.
•If using USB connectivity, the Cisco uBR925 cable access router must be within 5 meters of the connected PC.
•On a stable, flat surface or desktop close to the devices to be connected so that your cables reach all devices, but in a location where the bottom, sides, and rear of the router are clear of obstructions and away from the exhaust of other equipment.
•Close to the power source. The power source must use a grounded power outlet, from 100 to 240 VAC, depending on the country of operation.
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"Physical Placement" section
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Check the power at the subscriber site before and after installation to ensure that you are receiving clean power. Ensure proper grounding.
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"Verifying Power Requirements" section
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Attach the 8-pin end of the supplied power supply cord into the cable access router's power connector. Push the plug into the connector until it locks. Plug the cable access router's power supply into the wall outlet.
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"Connecting Power" section
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Connect the router's F-connector to the cable TV coaxial drop cable. (If the subscriber also subscribes to cable TV services, install a cable splitter/directional coupler and high-pass filter as appropriate.)
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"Connecting to the Cable System" section
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Connect the cable access router's phone RJ-11 connectors directly to individual analog telephones, modems, or fax devices. If supported by your phone system, you can use adapters that allow multiple telephones or fax devices to be connected to the telephone lines. At subscriber sites supporting multiple voice devices on a single VoIP telephone line, ensure that you have all certified connector assemblies/adapters and wiring items needed to support the configuration.
Note Cisco does not provide these connector assemblies and adapters.
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"Connecting to Telephones or Fax Devices" section
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Use the Ethernet ports to connect the Cisco uBR925 cable access router to CPE devices at the site:
•To directly connect PCs to the Cisco uBR925 cable access router, connect as many as four of the unit's Ethernet hub ports directly to the 10BaseT Ethernet (RJ-45) ports of the PCs. Use 10BaseT Ethernet straight-through cables.
•To connect additional PCs and CPE devices at the site or to connect to an existing network at the site, connect one of the unit's Ethernet hub ports directly to the 10BaseT Ethernet port of an Ethernet hub, using a 10BaseT Ethernet crossover cable. Then connect each computer/device to the hub, using straight-through 10BaseT Ethernet cables.
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"Connecting to the Computer (Ethernet)" section
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If using USB connectivity, connect the Cisco uBR925 cable access router to the PC with a host-to-device (type "A" to type "B") USB cable.
Note The USB specification requires that the USB cable not exceed 5 meters in length. You can, however, use a maximum of 5 USB hubs, each with a maximum 5 meter cable, for a maximum distance of 25 meters.
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"Connecting to the Computer (USB)" section
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Power on all other devices at the subscriber site: PCs, Ethernet hub, and all other equipment as applicable.
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"Router Power On and Initialization Sequence" section
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If using USB connectivity, install the Cisco uBR925 USB driver software that is on the software CD included with the Cisco uBR925 cable access router.
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See the documentation accompanying the software CD for details.
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(Optional) Ensure that the data channel frequency has a sufficient RF signal level to meet your cable plant specifications, and verify that the RF input levels are relative to a nearby analog video level:
•Check the RF signal with an RF power meter at the Type F coax connector to verify the DOCSIS system signal.
•Verify that the nearby analog video signal is within the correct range of -15 to +15 dBmV for most coaxial cable CATV systems.
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Test the installation:
•Establish an Internet connection and request data from a PC that is connected to the cable access router.
•Make a VoIP telephone call.
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"Verifying Installation" section
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Physical Placement
The Cisco uBR925 cable access router can be placed flat on a hard, stable surface such as a desktop or table top. When doing so, use the following guidelines:
•Place the cable access router close to the cable TV drop connection and all devices to be connected at the subscriber site.
•Install the cable access router in compliance with all national and local electrical codes such as:
–US NFPA 70
–Canadian Electrical Code, part I, CC22.1
–IEC 364, part 1 through part 7
•The bottom and sides of the cable access router must remain unobstructed to ensure adequate airflow and to prevent the unit from overheating.
•The cable access router should have at least 3 inches of clearance at the rear to allow sufficient space for the connected cables without crimping.
Caution Do not install the cable access router on an uneven or soft surface.
Verifying Power Requirements
The cable access router uses one external AC-input power supply. The OK (power) LED on the front of the unit indicates that the power supply is supplying power to the unit when it is connected and operational.
The AC-input power supply uses a power factor corrector that allows the Cisco uBR925 cable access router to operate in any country where the input voltage is between 100 and 240 VAC, and 50 or 60 Hz. Different power cords are available to suit the country of operation.
Refer to Table A-1 for AC-input power supply specifications, including input voltage and operating frequency ranges. Cisco recommends that you follow these precautions:
•Check the power at the subscriber site before and after installation to ensure that you are receiving clean power. Install a power conditioner if necessary.
•Install proper grounding to avoid damage from lightning and power surges. If using a North American (NEMA 5-15P) plug, you must plug the unit into a three-lead receptacle to ensure proper grounding.
Warning 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. (To see translations of the warnings that appear in this publication, refer to the appendix "Translated Safety Warnings.")
•Ensure that a fuse or circuit breaker no larger than 120 VAC, 15A U.S. (240 VAC, 10A International) is used on the phase conductors (all current-carrying conductors providing power to the device).
•Do not work on the system or connect or disconnect any cables (Ethernet, cable, or power) during periods of lightning activity—the possibility of serious physical injury exists if lightning should strike and travel through those cables. In addition, the equipment could be damaged by the higher levels of static electricity present in the atmosphere.
Note Adhere to the safety guidelines presented in the "Safety" section before following procedures in the remainder of this chapter. Be sure that all equipment to be connected to the cable access router is powered off.
Caution Do not connect the router to power at this point, because the router will begin its initial power on sequence and attempt to connect to the network. The unit should be powered on only after all other connections have been made, as described later in this chapter.
Connecting Power
This section describes how to connect the Cisco uBR925 cable access router to power using the AC-input power supply.
Warning Read the installation instructions before you connect the system to its power source. (To see translations of the warnings that appear in this publication, refer to the appendix "Translated Safety Warnings.")
To connect AC-input power to the Cisco uBR925 cable access router:
Step 1 See "Verifying Power Requirements" section to verify that the external power source is adequate for the router.
Step 2 Turn on power to all other devices that will be connected to the Cisco uBR925 cable access router (such as a PC, Ethernet hub, or USB hub).
Step 3 Plug the 8-pin end of the AC power supply cord into the power connector at the rear of the router. Push the plug into the connector until it locks. (See Figure 3-1.)
Figure 3-1 Connecting the Power Cord
Step 4 Connect the AC power supply cord to the other end of the power supply.
Step 5 Plug the 3-prong end of the power cord into a standard electrical power outlet at the site. Power is immediately supplied to the router. The router is meant to be left on at all times, and therefore, has no power switch.
Step 6 Continue with the following sections to connect the remaining cables to the Cisco uBR925 cable access router.
Caution To turn off the router when it is operational, disconnect the power cord from the power supply. To prevent electrical shock, do not disconnect the AC power supply cord from the power outlet while the router is operating.
Warning 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. (To see translations of the warnings that appear in this publication, refer to the appendix "Translated Safety Warnings.")
Warning Unplug the power cord before you work on a system that does not have an on/off switch. (To see translations of the warnings that appear in this publication, refer to the appendix "Translated Safety Warnings.")
Connecting to the Cable System
To connect the Cisco uBR925 cable access router to the cable system:
Step 1 Verify that the router is not connected to power.
Step 2 Locate the RF coaxial cable coming from the coaxial cable CATV wall outlet.
Step 3 Install a cable splitter/directional coupler, if needed, to separate signals for TV and computer usage. If necessary, also install a high-pass filter to prevent interference between the TV and computer signals.
Step 4 Connect the RF coaxial cable to the router's F-connector. Hand-tighten the connector, making sure that it is finger tight; then give it a 1/6 turn with a wrench. (See Figure 3-2.)
Figure 3-2 Connecting the CATV Coaxial Cable to the Cisco uBR925 Cable Access Router
Caution Do not overtighten the connector because this can break off the connector. Using a torque wrench is not recommended because of the danger of tightening the connector more than the recommended 1/6 turn after it is finger tight.
Step 5 Make sure that all other coaxial cable connectors—all intermediate splitters, couplers, or ground blocks—are securely tightened from the distribution tap to the Cisco uBR925 cable access router, following instructions in Step 4.
Note Loose connectors inside the building or residence can cause intermittent router operation.
Caution To ensure compliance with FCC limits, connection to the cable system must be made with a high-quality, shielded cable. If the quality or general condition of the coaxial cable at the subscriber site is in question, Cisco recommends that you replace the coaxial cable. For more information on the effects of substandard cabling on the cable access router installation, see the
"CATV Coaxial Cabling" section.
Connecting to Telephones or Fax Devices
If you have purchased voice services from your service provider, use the following procedure to connect the Cisco uBR925 cable access router to telephone or fax devices at the site.
Step 1 Obtain the telephone number assignments for each voice port from your service provider, and label each telephone or fax device with its assigned number.
Step 2 Obtain a proper cable for each device to be connected. This cable should be either a two-wire or a four-wire cable wired straight-through, with an RJ-11 connector on at least one end. The other end typically has an RJ-11 connector as well, but this depends on the type of device being connected.
Note When connecting a single-line telephone, you can use either a two-wire or a four-wire cable. When connecting a dual-line telephone to the "V1+V2" port, you must use a four-wire cable.
Step 3 Connect the RJ-11 end of this cable to the appropriate voice port (labeled "V1+V2" and "V2") on the rear panel of the Cisco uBR925 cable access router. Press the cable firmly into the receptacle.
Step 4 Connect the other end of the cable to the telephone or fax device that has been given the number assigned for that voice port. Press the cable firmly into the receptacle.
Caution Do not connect the voice ports to telephone wires that exit the building under any circumstances—this is a safety hazard. The Cisco uBR925 cable access router is not designed to connect to the Public Telephone Switched Network (PTSN).
See Figure 3-3 illustrates a possible configuration. The exact configuration depends on the phone numbers that are assigned by the service provider.
Figure 3-3 Connecting the Voice Ports
Note The "V1+V2" connector supports either a single-line analog telephone or a two-line analog telephone. When using a two-line telephone, a device plugged into the V2 port acts as an extension to the line 2 telephone.
Step 5 Repeat Step 3 and Step 4 to connect a second telephone, modem, or fax device to the other voice port.
Caution When connecting multiple telephones or fax devices to a telephone line, be sure that the sum of the RENs of all devices on any one line does not exceed five. If too many devices are attached, they may not ring properly.
Warning This equipment contains a ring signal generator (ringer), which is a source of hazardous voltage. Do not touch the RJ-11 (phone) port wires (conductors), the conductors of a cable connected to the RJ-11 port, or the associated circuit board when the ringer is active. The ringer is activated by an incoming call. (To see translations of the warnings that appear in this publication, refer to the appendix "Translated Safety Warnings.")
Connecting to the Computer (Ethernet)
This section describes how to connect the Cisco uBR925 cable access router to a computer using the Ethernet interface. If supported by the service provider, you can also connect an Ethernet hub to the cable access router, and then connect multiple computers to the Ethernet hub.
If you are not using the Ethernet interface, proceed to the "Connecting to the Computer (USB)" section.
Note If supported by your service provider, you can connect separate computers using both the Ethernet and USB interfaces.
To connect the Cisco uBR925 cable access router to computers and other CPE devices at the site:
Step 1 Locate all needed 10BaseT RJ-45 Ethernet cables:
•Use straight-through Ethernet cables to directly connect as many as four PCs to the Cisco uBR925 cable access router's four Ethernet hub ports.
•Use a crossover Ethernet cable to connect the Cisco uBR925 cable access router to an Ethernet hub if more than four PCs or other LAN devices are to be connected at the site. Connect all devices to the hub using straight-through Ethernet cables. (If your hub has an uplink port, you might be able to use a straight-through cable to connect the hub directly to the computer.)
Step 2 Connect one end of the Ethernet cable to one of the router's Ethernet ports (labeled 1, 2, 3, or 4) at the rear of the unit. (See Figure 3-4.)
Figure 3-4 Connecting the Ethernet Cable to the Cisco uBR925 Cable Access Router
Note Do not connect the Ethernet cables into the RJ-45 console connector.
Step 3 Press the cable end firmly into the router's Ethernet receptacle and connect the other end to the computer or hub as applicable.
Step 4 Repeat Step 2 and Step 3 for each Ethernet connection from the Cisco uBR925 cable access router.
Connecting to the Computer (USB)
This section describes how to connect Cisco uBR925 cable access router to a computer using the Universal Serial Bus (USB) interface. (If you are not using the USB interface, complete the "Connecting to the Computer (Ethernet)" section before proceeding.)
Step 1 Verify that your computer is turned on and meets the requirements in Table 2-1. In particular, your computer must be running Windows 98, Windows 98SE, Windows 2000, and Windows Millennium.
Note Windows 95 and Windows NT do not support networking using the USB interface.
Step 2 If you are using a USB hub, verify that it is already installed and working before connecting the Cisco uBR925 cable access router.
Step 3 Plug the broad, flat plug (the type "A" or host end) of the USB cable into the USB port on your computer (or USB hub).
Step 4 Plug the other rectangular box plug (the type "B" or device end) of the USB cable into the USB port on the rear panel of the Cisco uBR925 cable access router. (See Figure 3-5.)
Figure 3-5 Connecting the USB Cable to the Cisco uBR925 Cable Access Router
Step 5 Verify that the USB LED on the front panel of the Cisco uBR925 cable access router turns on. If this LED does not light, check that each connector on the USB cable is fully inserted into the USB port on the computer (or the hub) and the USB port on the cable access router. If using a hub, try disconnecting it from the computer and connecting the Cisco uBR925 cable access router directly to the computer. If the USB LED then turns on, check that the USB hub is properly installed and powered.
Step 6 Install the required USB driver software. Windows automatically detects the installation of a new USB device and begins the software installation procedure. For information on installing the software device drivers required for USB connectivity, see the instructions that accompany the Cisco uBR925 USB driver software CD that is shipped with the cable access router.
Note Windows might not automatically detect the presence of the new USB interface until the Cisco uBR925 cable access router completes the registration process with the cable system and comes online. This can take several minutes, depending on the cable network and services purchased from the service provider.
Router Power On and Initialization Sequence
When the Cisco uBR925 cable access router is connected and powered on, it runs automatic self-diagnostic and installation procedures. The following procedure describes what you should see during this process.
Note For the router to complete its power on sequence, a number of tasks must be completed at the CMTS. Refer to the "Initial Power On and Provisioning" section for an overview of the router's initialization and provisioning processes.
While the Cisco uBR925 cable access router initializes:
Step 1 Watch the LEDs on the front of the router. When the cable access router first powers on, all LEDs briefly come on and then go off. As the self-test is run, various LEDs light to reveal diagnostic progress and turn off when the self-test is complete.
Step 2 The OK LED then blinks as the router completes self-test and boots a Cisco IOS image. When this is finished, the OK LED comes on again.
Note The LEDs on the front panel display the power on self-test progress and status. Should the self-test fail, these LEDs display error codes. Because the self-test failed, the OK LED remains off. Refer to the "Initialization and Self-Test Problems" section for a description of self-test LED error patterns.
Step 3 During the router's initialization and download, the green OK and ACT LEDs both blink. After completing the download procedure (which could take up to 10 minutes if the router downloads a new Cisco IOS image and a configuration file), the green OK LED remains on.
Step 4 Check that the DS, US, LINK, and DSNR LEDs remain on to indicate that the router is operational and is receiving a healthy signal:
•The DS LED reveals that the router is locked to a downstream channel.
•The US LED reveals that the router has established connectivity with the CMTS and is operating within 6 dB of desired power level (generally within 3 dB).
•The LINK LED reveals that the cable interface is operational.
•The DSNR LED reveals that the router is receiving a quality downstream signal with a low signal-to-noise ratio that is 5 dB above the downstream lock threshold.
Step 5 Check the remaining LEDs for proper operation:
•The ACT LED blinks to indicate activity on the cable interface.
•The Ethernet 1, 2, 3, 4 LEDs blink to indicate activity from the PCs and other customer premises devices connected to the corresponding Ethernet ports.
•The USB LED blinks to indicate activity from the PC connected to the USB port.
•If VoIP services have been enabled, the V OK LED lights to indicate that the voice system is operational.
Step 6 If all LEDs appear normal, proceed to the "Verifying Installation" section to test the router and its connection to each part of the network. If any problems occur, proceed to "Troubleshooting," to solve the problem.
Step 7 After verifying operations, acquaint the subscriber with the router recommended ambient temperature requirement of 23° to 113°F (-5° to 45°C). Remind the subscriber to keep the area around the router as free from dust as is practical and review general safety standards.
Step 8 Give the subscriber the Cisco-provided subscriber publications and any literature your company provides, including instructions on how to contact your customer service department.
Verifying Installation
Use the following procedure to verify Internet connectivity between the PCs connected to the router's Ethernet ports and the Internet access provided by the CMTS. See "Troubleshooting," if any problems occur.
Step 1 From a PC connected to the Cisco uBR925 cable access router, start the Internet browser program installed on the PC.
Step 2 Enter a URL of your choice in your web browser. If a URL is not known, use http://www.cisco.com to connect to Cisco's CCO web site.
Step 3 Watch the appropriate Ethernet LED on the front of the router blink as data is transmitted on the link. If the selected web page comes up in the Internet browser screen, the network connection is successfully established and this particular Ethernet port is operational.
Step 4 Repeat Step 1 through Step 3 for each PC connected to the Cisco uBR925 cable access router.
Step 5 Disconnect the cable system input by unscrewing the cable F-connector at the back of the router.
Step 6 Using an in-line attenuator, add 3 to 6 dB of attenuation between the router and the coaxial cable input.
Note The addition of 3 to 6 dB of attenuation simulates the variation found in a cable network over time and in relation to temperature. If you install a router at a time of year when the temperature is cooler, this step might not be necessary.
If you install a cable access router at a time of year when the temperature is warmer, this step might assist you in determining how the cable access router will function over time. If the router does not function properly with the addition of attenuation, you should replace and reconfigure the coaxial cables at the subscriber site.
Step 7 Reconnect the cable system to the router and recheck the network connection at one of the PCs. Reload the previous web page or another URL to verify that you can still access the Internet.
Step 8 Disconnect the cable system again by unscrewing the cable connector at the back of the router.
Step 9 Remove the in-line attenuator from the back of the router.
Step 10 Reconnect the cable system to the router and recheck the network connection at the PC as in Step 7.
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