Cisco CISCO881-SEC-K9 Hardware Installation Guide - Page 75

Chapter 3 Connecting the Router Connecting a Data BRI Port Table 3-2 Cisco Adapter Cables for Use with 3G Fixed Routers Cisco Product Number 3G-ACC-SSMB-TNC 3G-ACC-TS9-TNC Antenna Adapter Length 14.5 inches 13.5 inches Insertion Loss 0.66 dB 0.62 dB Frequency (MHz) 2100 2100 For additional information on all the available cables and antennas available for 3G, go to: http://www.cisco.com/en/US/docs/routers/access/1800/1861/software/feature/guide/mrwlsgsm.html#w p1262730 Connecting a Data BRI Port You can connect the Data BRI port to the ISDN service provider as a backup link to the WAN port in case the primary xDSL (general term referring to various forms of DSL, including global industry standard symmetrical high-speed DSL [G.SHDSL]) WAN service fails. The Data BRI connection is not available on the third-generation (3G) models. The cabling requirements for the ISDN S/T connection are as follows: • You must provide two unshielded Category 5 cables. The first cable connects the NT1 box to the splitter, and the second cable connects the splitter to the wall jack. • There are RJ-45 connectors at both ends of the default orange ISDN S/T cable. However, an RJ-45-to-RJ-11 ISDN S/T cable is available upon request if the wall jack at the site requires an RJ-11 connector. Contact your router reseller for the appropriate cable. Caution Both LAN and WAN ports use RJ-45 connectors. Use caution when connecting cables to these connectors. To avoid damage to the router, do not connect telephone-network voltage (TNV) circuits (such as ISDN or DSL circuits) to safety extra-low voltage (SELV) circuits (such as LAN circuits). Cisco 860 Series, Cisco 880 Series, and Cisco 890 Series Integrated Services Routers Hardware Installation Guide OL-16193-07 3-19