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Port and Cable Information for Cisco 2800 Series Routers
OL-5785-01
Preparing to Connect to a Network
The default parameters for the console port are 9600 baud, 8 data bits, 1 stop bit, and no parity. The
console port does not support hardware flow control. For detailed information about installing a console
terminal, see the “Connecting to a Console Terminal or Modem” section on page 12.
For cable and port pinouts, refer to the online document Cisco Modular Access Router Cable
Specifications. This document is located on Cisco.com.
Auxiliary Port Connections
The router has an EIA/TIA-232 asynchronous serial auxiliary port (RJ-45) that supports flow control.
Depending on the cable and the adapter used, this port appears as a DTE or DCE device at the end of the
cable.
For connection to a modem, your router is provided with an RJ-45-to-DB-25 adapter cable. (A
DB-9-to-DB-25 adapter is also included with the Cisco 2801 router.)
For detailed information about connecting devices to the auxiliary port, see the “Connecting to a Console
Terminal or Modem” section on page 12 of the “Cable Connection Procedures for Cisco 2800 Series
Routers” online document.
For cable and port pinouts, refer to the Cisco Modular Access Router Cable Specifications online
document on Cisco.com.
Preparing to Connect to a Network
When setting up your router, consider distance limitations and potential electromagnetic interference
(EMI) as defined by the applicable local and international regulations.
Network connection considerations are provided for several types of network interfaces and are
described in the following sections:
• Ethernet Connections, page 3
• Serial Connections, page 3
• ISDN BRI Connections, page 5
• CSU/DSU Connections, page 6
Refer to the following online documents for more information about network connections and interfaces:
• Cisco Network Modules Hardware Installation Guide
• Cisco Interface Cards Installation Guide
• Cisco Modular Access Router Cable Specifications
Warning
To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network
voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Some
LAN and WAN ports both use RJ-45 connectors.
Statement 1021