To access the Routing Engines from a console, you must use the serial port breakout cable provided with the chassis to connect the JCS1200 platform. The breakout cable provides a direct serial interface to each Routing Engine in the JCS1200 platform and contains 14 RJ-45 serial cable connectors (see Figure 1).
Figure 1: JCS1200 Serial Port Breakout Cable

![]() | Note: Only 12 of the 14 RJ-45 serial cable connectors are used to connect the console to the Routing Engines. Connectors 13 and 14 are reserved for future use. |
To connect the console:
![]() | Note: Some consoles require that you use an CPU adapter. If needed, connect a CPU adapter to each of the 12 RJ-45 connectors on the breakout cable. Then connect each CPU adapter to your console. For information about the CPU adapter pinouts, see Pinouts for RJ-45 Adapters on the JCS1200 Management Module. |