Cisco Systems UBR7225VXR specifications Console and Auxiliary Port Cables and Pinouts

Appendix C Cable Specifications

Console and Auxiliary Port Cables and Pinouts

If you use different types of coaxial cable, the following problems can appear:

•Damage to Cisco uBR7225VXR cable interface line card connectors—Cable interface line card connectors are designed for 59-series or 6-series cable and connectors. Larger cables can damage the connectors.

•Poor return loss—High-quality cable and correct connectors help to ensure an optimal return loss of 16 dB or more.

Caution Poorly shielded coaxial cable may result in undesired signal leakage (egress), interference from over-the-air signals (ingress), or crosstalk between cables in close physical proximity.

Console and Auxiliary Port Cables and Pinouts

The router arrives with a console and auxiliary cable kit, which contains the cable and adapters you need to connect a console (an ASCII terminal or PC running terminal emulation software) or modem to the router. The console and auxiliary cable kit includes:

•RJ-45-to-RJ-45 rollover cable

•RJ-45-to-DB-9 female data terminal equipment (DTE) adapter labeled TERMINAL

•RJ-45-to-DB-25 male data communications equipment (DCE) adapter labeled MODEM Figure C-1shows the RJ-45 cable connector.

Figure C-1 RJ-45 Plug and Receptacle

87654321

RJ-45 connector

242232

Identifying an RJ-45 Rollover Cable

You can identify a rollover cable by holding the two ends of the cable next to each other with the tab at the back. The wire connected to the pin on the outside of the left hand plug should be the same color as the wire connected to the pin on the outside of the right hand plug, as shown in Figure C-2.

Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide

C-2 OL-17309-02