TAILIEUCHUNG - CCNA 1 and 2 Companion Guide, Revised (Cisco Networking Academy Program) part 28

Cisco Networking Academy Program CCNA 1 and 2 Companion Guide, Revised part 28 is the Cisco approved textbook to use alongside version of the Cisco Networking Academy Program CCNA 1 and CCNA 2 web-based courses. The topics covered provide you with the necessary knowledge to begin your preparation for the CCNA certification exam (640-801, or 640-821 and 640-811) and to enter the field of network administration. | Page 239 Tuesday May 27 2003 9 01 AM Cabling the WAN 239 To connect an ADSL line to the ADSL port on a router perform the following simple steps Step 1 Connect the phone cable to the ADSL port on the router. Step 2 Connect the other end of the phone cable to the external wall phone jack. To connect a router for DSL service you need a phone cable with RJ-11 connectors. DSL works over standard telephone lines. It uses only two pins on the RJ-11 connector as shown in Table 4-8. NOTE If you are connecting non-DSL devices to a phone line with DSL service you need to install a filter to prevent interference between data and voice services. Table 4-8 Telephone Connector Pinouts RJ-11 Pin Signal 1 Unused 2 Unused 3 Transmit Tx 4 Receive Rx 5 Unused 6 Unused Routers and Cable Connections Cable modems enable two-way high-speed data transmissions using the same coaxial lines that transmit cable television. Some cable service providers are promising data speeds up to six and a half times that of T1 leased lines. With the demand for broadband services cable modem connection is becoming more popular. 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 F-connector interface that can be connected to a cable system. Coaxial cable and an F connector are used to connect the router and cable system. The coaxial cable can be either radio grade 59 RG-59 or RG-6 although RG-6 is recommended. To connect the Cisco uBR905 cable access router to the cable system follow these steps 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. NOTE RF coaxial cable connects radio frequencies to antennas. The majority of cable TV systems use coaxial cable as their wiring system. The main trunk lines that run from the cable provider to a neighborhood .

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