5.2 Cabling the WANs  
  5.2.6 Routers and cable connections  
The Cisco uBR905 cable access router provides high-speed network access on the cable television system to residential and small office, home office (SOHO) subscribers. The uBR905 router has a coaxial cable, or F-connector, interface that connects directly to the cable system. Coaxial cable and a BNC connector are used to connect the router and cable system.

Use the following steps to connect the Cisco uBR905 cable access router to the cable system:

  • Verify that the router is not connected to power.
  • Locate the RF coaxial cable coming from the coaxial cable (TV) wall outlet.
  • Install a cable splitter/directional coupler, if needed, to separate signals for TV and computer use. If necessary, also install a high-pass filter to prevent interference between the TV and computer signals.
  • Connect the coaxial cable to the F connector of the router. Hand-tighten the connector, making sure that it is finger-tight, and then give it a 1/6 turn with a wrench.
  • 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 uBR905 router.

Caution: Do not over tighten the connector. Over tightening may break off the connector. Do not use a torque wrench because of the danger of tightening the connector more than the recommended 1/6 turns after it is finger-tight.