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This chapter explains the procedures for installing and starting the Cisco uBR904 cable modem. The chapter contains the following sections:
The most common installation location for a Cisco uBR904 cable modem is on a desktop next to a personal computer. You can also install a Cisco uBR904 cable modem on a shelf in an equipment rack, for example, if you are installing a Cisco uBR904 cable modem at a headend site for test purposes.
Follow these steps to connect the CATV coaxial cable to the Cisco uBR904 cable modem:
Step 1 Locate the coaxial cable at the installation site and move the cable end, or install a two-way splitter as necessary, to provide a connection near the Cisco uBR904 cable modem location.
Step 2 Connect the CATV coaxial cable end to the F connector on the back of the
Cisco uBR904 cable modem. This connector is labeled "Cable TV In."
(See Figure 3-1.)
This completes the procedure for connecting the CATV coaxial cable to the Cisco uBR904 cable modem.
Follow these steps to connect the Ethernet cables to the Cisco uBR904 cable modem at the installation site:
Step 1 Locate the straight-through yellow Ethernet cable that was included with your Cisco uBR904 cable modem. Note that only one cable is included. For additional cables, see your commercial vendor. (See Figure 3-2.)
Step 2 Connect one end of the Ethernet cable to one of the Ethernet ports (labeled 1X, 2X, 3X, or 4X) on the rear panel of the Cisco uBR904 cable modem. Press the cable end firmly into the receptacle. When properly connected, the Ethernet cable will be locked into the receptacle and can only be removed by pressing the plastic tab located on the connector while pulling the cable back from the receptacle. (See Figure 3-3.)
Step 3 Repeat Step 2 for other Ethernet connections.
This completes the procedure for connecting Ethernet cables to the Cisco uBR904 cable modem.
Follow these steps to connect the Cisco uBR904 cable modem to the computer at the installation site:
Step 1 Locate the unconnected end of the yellow Ethernet cable that you just connected to the Cisco uBR904 cable modem in the previous section, "Connecting Ethernet Cables to the Cisco uBR904 Cable Modem," and connect this end to the Ethernet port on the personal computer. (See Figure 3-4.)
Step 2 Repeat Step 1 for other cable modem and personal computer connections.
This completes the procedure for connecting the Cisco uBR904 cable modem to a computer.
The console port is configured as data communications equipment (DCE). There is one console port on the back of the Cisco uBR904 cable modem; it uses an RJ-45 connector. RJ-45-to-DB-25 adapters are available for connection to modems and other external communications equipment.
Before connecting a hand-held terminal to the console port, configure the terminal to match the Cisco uBR904 cable modem console port as follows: 9600 baud, 8 data bits, no parity, 2 stop bits (9600 8N2). You need an RJ-45 console cable to connect the terminal to the console port. After you establish normal Cisco uBR904 cable modem operation, you can disconnect the terminal.
The Data Set Ready (DSR) signal is active when the system is running. The console port does not support modem control or hardware flow control. Table 3-1 lists the signals used on the console port. The console port requires an RJ-45 cable.
| Pin | Signal | Direction | Description |
|---|---|---|---|
1 | - | - | - |
2 | DTR | ---> | Data Terminal Ready |
3 | TxD | ---> | Transmit |
4 | GND | - | - |
5 | GND | - | - |
6 | RxD | <--- | Receive |
7 | DSR | <--- | Data Set Ready (always on) |
8 | - | - | - |
This completes the information necessary for connecting the console cables.
Use the following procedures (see also Appendix Figure 3-5) to connect AC-input power to the Cisco uBR904 cable modem.
Step 1 At the rear of the Cisco uBR904 cable modem, locate the power receptacle.
Step 2 Insert the cable from the power supply into the power receptacle.
Step 3 Plug one end of the power cord into the power supply.
Step 4 Plug the other end of the power supply into an AC power source.
This completes the procedure for connecting AC-input power.
After installing the Cisco uBR904 cable modem and connecting the cables, start the
Cisco uBR904 cable modem as follows:
Step 1 Connect the power supply to the cable modem. See the earlier section "Connecting Power" for details.
Step 2 Watch the LEDs (lights) on the front of the cable modem. The OK (power) LED on the front of the unit blinks for up to one minute. When the
Cisco uBR904 cable modem boot is complete (a few minutes), the OK LED stays on and the ACT (cable) LED goes on.
Step 3 Configure the Cisco uBR904 cable modem. When you start up the
Cisco uBR904 cable modem, a connection should be established to the Cisco uBR7246 universal broadband router installed at the cable headend. The Cisco uBR904 cable modem will be automatically configured by the universal broadband router.
This completes the installation of the Cisco uBR904 cable modem.
Posted: Fri Jun 4 19:12:35 PDT 1999
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