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How ttyUSB* created on my 3G modem problem

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Operating Systems Linux Ubuntu How ttyUSB* created on my 3G modem problem
# 1  
Old 02-27-2011
How ttyUSB* created on my 3G modem problem
Hi

I would like to ask if someone knows the explaination of the /dev/ttyUSB*. I had a internet connection 3G usb dongle modem and need to restart before it detected the mobile broadband in the network manager. Before i reinstalled the lucyd lynxs i never meet this problem. But after i reinstalled the lucyd lynx i need to put the usb modem first before starting my system.. but if i plug my usb modem in a running state the network manager doesn't detect the mobile network therefore a remedy is plug first and restart.

One thing i notice if i had a working usb modem is i had a /dev/ttyUSB1-4 but if i plug it later and dont have a working usb modem.. i dont have the /dev/ttyUSB*.

I dont know if i this is the cause or the services that doesn't start if a plug the usb in running state..

Hope someone knows and understand my problem.
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LEARN ABOUT MINIX

term

TERM(1) 						      General Commands Manual							   TERM(1)

NAME

       term - turn PC into a dumb terminal [IBM]

SYNOPSIS

       term [baudrate] [parity] [bits_per_character] [-dial_string] [device]

EXAMPLES

       term 2400	   # Talk to modem at 2400 baud

       term 1200 7 even    # 1200 baud, 7 bits/char, even parity

       term 8 9600 /dev/tty01
			   # 9600 baud, 8 bits/char, no parity, use tty01

       term -atdt12345 /dev/tty01
			   # Start with a command to dial out

DESCRIPTION

       Term  allows MINIX to talk to a terminal or modem over RS232 port 1.  The program first sets the baudrate, parity and character length, and
       then forks.  The parent sits in a loop copying from stdin (usually the console's keyboard), to the terminal  or	modem  (/dev/tty00).   The
       child  sits  in a loop copying from the terminal or modem (/dev/tty00) to standard output.  Thus when RS232 port 1 is connected to a modem,
       every keystroke typed on the keyboard is sent to the modem, and every character arriving from the modem is displayed.  Standard	input  and
       output  may  be redirected, to provide a primitive file transfer program, with no checking.  Any argument that starts with a minus ('-') is
       sent out to the modem, usually to dial out.  Term accepts several commands that are formed by typing the escape character,  CTRL-],  and  a
       letter.	 Type  CTRL-]?	to  see  a list of commands.  The subshell command is very important, it allows you to type in a ZMODEM command to
       transfer data.  Do not quit term to do this, or your modem line will be reset!  Term keeps the modem line open on file descriptor  9  while
       running the subshell, so you can type

	    <&9 >&9

       at the end of your ZMODEM command to connect it to the modem.

       Important  note: to use term, it is essential that /etc/ttytab is configured so that there is no shell hanging on /dev/tty01.  If there is,
       both the shell and term will try to read from /dev/tty01, and nothing will work.

SEE ALSO

       rz(1), sz(1).

																	   TERM(1)