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Cabling the SRP IOA

Before powering up the router, you must set up a management console. The console enables you to communicate with your system during the power-up process and to manage your system using the command-line interface (CLI).

When connecting a console directly to the SRP IOA, use a cable appropriate for your terminal connector. The cable must have a female DB-9 connector to attach to the RS-232 port on the SRP IOA. See Figure 26.

The console port is considered a data terminal equipment interface (DTE). Direct connection to a terminal or PC (which also have DTE interfaces) requires a crossover cable.

The router has network timing ports and management ports located on the SRP IOA. See Figure 26 and Table 8 for details on each component.

Table 8: SRP IOA Ports

Port	Description
Network timing ports	Two dual-purpose BNC connectors for BITS timing clock sources (E1 or T1) User-configurable through the CLI Primary (A) and secondary (B) 75-ohm E1 2.048-Mbps/T1 1.544–Mbps inputs terminating with a 120/75 ohm or 100/75 ohm balun
Management ports	One 10/100Base-T Ethernet management port with an RJ-45 connector Two RS-232 ports with a DB-9 connector for direct CLI (Console) and debug (Auxiliary) access. The Auxiliary port is used to debug ports on a specific processor (SRP module, LM).

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