Cisco Cisco ASA 5512-X Adaptive Security Appliance Guía Para Resolver Problemas

The information in this document was created from the devices in a specific lab environment. All of the
devices used in this document started with a cleared (default) configuration. If your network is live, make sure
that you understand the potential impact of any command.

Refer to Cisco Technical Tips Conventions for more information on document conventions.

Configure the modem for console connectivity. Since the the console port lacks reverse Telnet
capability, the modem initialization string (init string) must be set before you connect the modem to
the console port of the ASA.

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Connect the modem to the console port of the ASA.

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Configure the ASA to accept incoming calls.

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These tasks are explained in the Step−By−Step Procedure section of this document.

Complete these steps in order to attach a US Robotics modem to the console port of a Cisco ASA:

Connect the modem to a PC. This step is necessary in order to access the modem to set the
initialization string.

Attach an RJ−45−to−DB−9 adapter marked "Terminal" to the COM port of the PC. From the RJ−45
end of the adapter, connect a flat−satin Rolled RJ−45−−RJ−45 cable (part number CAB−500RJ= ),
which is provided with every Cisco ASA for console connections. You also need an
RJ−45−to−DB−25 adapter marked "MODEM" (part number CAB−25AS−MMOD) in order to
connect the rolled cable to the DB−25 port on the modem.

1. 

On the modem, turn off the modem, set DIP switch seven to down, and turn on the modem in order to
restore the factory defaults. After this, turn the modem off again. See the Miscellaneous section of this
document for information about DIP switch settings.

2. 

Reverse Telnet from the PC to the modem.

Use a terminal emulation program on the PC, such as HyperTerminal, and access the PC modem
through the COM port you connected to in step 1. Once you connect to the PC modem through the
COM port, you need to apply the initialization string (see step 4). For an example, refer to the
Example HyperTerminal Session section of Configuring Client Modems to Work with Cisco Access
Servers.

3. 

Type this initialization string which writes the desired initialization string settings to NVRAM:

4.