Linux console port serial connection it is very handy way of managing Cisco switches and routers. This is especially useful when you are connecting using older laptop with COM port. Please follow step-by-spe guide to configure Cisco Serial Console Connection in Linux:

First, install minicom from your distribution repositories

apt-get install minicom

Discover your serial com port, here it will be ttyS0

ubuntu@d600:~$ dmesg | grep tty
[    0.000000] console [tty0] enabled
[    0.408944] serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
[    0.513157] 00:0b: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A

setup minicon with -s switch

# minicom -s

           +-----[configuration]------+
           | Filenames and paths      |
           | File transfer protocols  |
           | Serial port setup        |
           | Modem and dialing        |
           | Screen and keyboard      |
           | Save setup as dfl        |
           | Save setup as..          |
           | Exit                     |
           | Exit from Minicom        |
           +--------------------------+

Choose Serial port setup and specify Cisco Defaults for Serial Connection like below:

   +-----------------------------------------------------------------------+
   | A -    Serial Device      : /dev/ttyS0                                |
   | B - Lockfile Location     : /var/lock                                 |
   | C -   Callin Program      :                                           |
   | D -  Callout Program      :                                           |
   | E -    Bps/Par/Bits       : 9600 8N1                                  |
   | F - Hardware Flow Control : Yes                                       |
   | G - Software Flow Control : No                                        |
   |                                                                       |
   |    Change which setting?                                              |
   +-----------------------------------------------------------------------+

come out of Serial port setup by pressing Esc then save configuration file:

           +-----[configuration]------+
           | Filen+-----------------------------------------+
           | File |Give name to save this configuration?    |
           | Seria|> cisco                                  |
           | Modem+-----------------------------------------+
           | Screen and keyboard      |
           | Save setup as dfl        |
           | Save setup as..          |
           | Exit                     |
           | Exit from Minicom        |
           +--------------------------+

Once saved, it will store the configuration in /etc/minicom/. To connect to your device, run minicom with config file name:

#minicom cisco

Welcome to minicom 2.4

OPTIONS: I18n
Compiled on Sep  5 2010, 08:31:32.
Port /dev/ttyS0

Press CTRL-A Z for help on special keys

R1>
R1>en
R1#

Make sure that you see your Port /dev/tty## is pointing to correct device. To Exit from minicom, Click Ctrl, A, Z then X.

Tetra Term VT

The motion receiving BEL character

Tera Term will sound the beep when the BEL character(ASCII $07) receives.

You can disable the beep sound for the BEL character by editing the Beep line in the [Tera Term] section of the setup file like the following:

Beep=off

Also, the terminal screen will flush instead of making the beep in the following configuration.

Beep=visual

Default:

Beep=on

Windows path: C:\Program Files (x86)\teraterm\TERATERM.INI