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Cisco uBR7100 Series and Cisco uBR7100E Series Universal Broadband Router Hardware Installation Guide
OL-5916-01
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 uBR7100 series cable interface card connectors—Cable interface 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-1 shows the RJ-45 cable connector.
Figure C-1 RJ-45 Plug and Receptacle
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 lefthand plug should be the same color as
as the wire connected to the pin on the outside of the righthand plug, as shown in Figure C-2.
H2936
8 7 6 5 4 3 2 1
RJ-45 connector