Hardware :: Connecting External Serial Modem To New Computer?
Nov 2, 2010
Is it better to use a Usb to Serial Adapter Cable or a PCI Serial Port Card when attaching a serial port modem to a computer that doesn't provide onboard serial ports?I am leaning toward the USB to Serial Cable but do they work as well as a Serial Port Card? I have a US Robotics business class external serial modem that that I'd like to keep using for dialup internet connections.Here are the devices I am thinking of using:
USB To Serial Cable: KINAMAX CB-RS232 (Prolific Chipset)
PCI Adapter Card: SYBA SD-PCI 15024 --single port chipset=SB16C1052PC1
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Sep 17, 2010
Friend's laptop:NEC Versa E20001500 Mhz processor256 memoryDick Smith Electronics external serial modemDick Smith USB to serial adaptorIt had a Windows failure which couldn't be recovered, so I'm putting Linux onto it for her, probably Pclinuxos Gnome, or maybe Suse 11.2 Gnome. Both recommended to me by a Linux user friend for this machine.
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Mar 4, 2010
I am trying to install an external serial modem on my Fedora 12 8it 64 bit system. The modem works ok on a windows machine using the standard drivers.
To attempt to install I selected;
System>Administration>network
Entered the administrator password
[code]....
When I went back a tried to install the model the following error message was shown.
component: system-config-network
Version: 1.5.99
Summary: TBf1b4415d NCPluginDevModem.py:37:getModemList:ImportError: No module named kudzu
[code]....
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Jul 8, 2010
I'm new to ubuntu. I'm trying to get my US Robotics external serial modem working so I can use Ubuntu.
I copied
wvdial & dependencies:
libuniconf4.6
libwvstreams4.6-extras
libwvstreams4.6-base
to a flash drive.
How do I get them to /var/cache/apt/archives? I tried to copy and drag&drop wont work.
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Mar 9, 2010
I have just installed ubuntu 7.10 on my computer. The problem is getting it connected to the internet using my Sony Ericsson w580i as a modem. I have used my phone to connect to the internet on XP operating system easily. Please assist me and try to give me a more simplified step by step procedure.
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Feb 25, 2011
I need redirect serial port from ONE computer to ANOTHER computer, and at the another send this port to VirtualBox with WindowsXP.VB needed because i need to use software for windoze I do this:NE computer:socat tcp-l:54321,reuseaddr,fork file:/dev/ttyS0,nonblock,waitlock=/var/run/tty0.lock
ANOTHER computer:
socat pty,link=/tmp/ttyS0,waitslave tcp:ONE:54321
Now (at ANOTHER) i've set serial port in VirtualBox as
[code]...
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Jun 18, 2010
If i want to use an external usb modem by which i can surf through the net, is this possible in fedora. Because the software is always an .exe file which is only compatible with wndows. let me know if i can use and also let me know the procedure for using this
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Mar 31, 2010
I did a forum search and too much came up that was not the answer I was looking for. I have only Linux devices at work and I was wondering how do Linux Administrators connect to Cisco devices via serial console cable. Cisco recommends 'Hyper Terminal' which was a Windows add-on applications licensed to XP. I think Vista and 7 no longer have the license to use Hyper Terminal. Regardless I don't have any versions of Windows and would like to use a serial cable from Com port 1 to the console port on the device. I can't use SSH since some devices don't support SSH and or I have to do a password recovery.
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May 4, 2011
I have a vista computer that is connected to a router via a ethernet cord. The router is connected to the internet.I have a computer installed with Debian that does not have a ethernet port in the back of it. Is there a way that I could connect my Debian computer to the internet through my vista?
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Jan 6, 2011
I have a Cisco Switch that is connected to my computer via serial. I simply want to configure the switch via the serial connection from within a terminal. I edited the /etc/inittab to include agetty for ttyS2 and ttyS3. The switch is hooked up to one of the two.
I ran
Code:
init q
to re-read the inittab
Ran a
Code:
ps -ef
and I can see the two agettys I also have run a dmesg to confirm that my computer has detected ttyS terminals. The requirements for the cisco switch connection are the following:
8 data bits
no parity
1 stop bit
[code]....
How do I connect to /dev/ttyS2 or /dev/ttyS3?
I've tried
Code:
agetty -8 115200 ttyS2 vt100
but it just hangs.
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Jan 20, 2009
on my server (fax server)with Cento O.S 5.2 final kernel 2.6.18-92.el5 the external serial modem 56k us robotic is not recognized.Kudzu not notes the modem.PS .On the same server ,same modem ,same serial but with Centos 4.5 ,this as regular detect.
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Nov 18, 2009
whose only way of connecting is trought a serial cable like the one used for a monitor but on the reversed, (sorry i dont know the correct term), ive tried using hptalx and kermit to no avail if someone could poinme in the rigth direction wolud be much apraciated, (i'll be having, some exams soon, so im in a bit of trouble), distribution slackware 12.2 , kernel 2.6.27.31 (i think).
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Dec 16, 2009
I am trying to connect to a cisco console port using the usb to serial converter. I am using minicom and I changed me setting to reflect the USB converter cable, but it isn't working. I have set my baud rate to 9600, 8 data bits and no parity. Minicom acts as if it is connected (it doesn't give any errors), but there is nothing on the screen and nothing happens when I type. Also, I use the tail command and it sees the usb connector connected when I unplug it and plug it back in.
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Apr 7, 2010
Background info
1) Compaq laptop, legacy free (no COM or LPT ports, USB only)
2) The laptop owner has dial-up and can't get broadband right now.
3) The laptop is running F12 with the PAE kernel.
4) Internal modem is a Conexant modem masquerading as Intel ICHxxx chipset. All attempts at getting a driver to work for this so far have failed.
5) I downloaded a Linuxant RPM but this failed to work.
So my only option that will get the computer back to its owner is an external modem using a Prolific PL2303 USB to SERIAL adaptor cable. When using the PL2303 cable my external modem appears as /dev/ttyUSB0 For the most part this works fine. I used the steps in the solution from the following thread
[URL]
The only problem I have is getting PPP to work THROUGH the cable. I have verified the cable is the issue. HOW?
1) I have tested all the modems on another machine with F12 through the onboard COM port. All modems dial, connect, then authenticate and maintain connection until I manually disconnect.
2) I have tested all modems used on the other machine with the PL2303 and can replicate the problem on that machine.
3) I have used more than one PL2303 cable and get the same behaviour.
Using the network configuration utility / wvdial / modem lights OR kppp produces the same results when controlling the modem located at /dev/ttyUSB0 So do I
1) have to make some configuration changes to relating to /dev/ttyUSB0
OR
2) is the something in ppp that needs configuring
OR
3) is it something else altogether that I am not aware of?
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Oct 7, 2010
Right now I am using some software to emulate a null modem serial cable on my Windows computer connected to itself. For development purposes I need to have a null modem connection to a linux computer from a windows host. Is there any method of doing this virtually?
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May 7, 2009
I have bought a so-called web'n'walk stick, which identifies itself as a "Globetrotter HSDPA Model". I managed to get it identified as a serial device (initially, it is detected as a USB drive), but I fail to get it working.
Things that might be of interest:
Code:
Code:
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Apr 21, 2010
I'm trying a long time to configure my 3g modem to connect.I had tryied using the KDE Network manager and the modem stay in "Waiting authorization" for ever ^^.The KDE Network manager runs ok in Kubuntu.I had tryied download and install kppp, but kppp don't open my modem (/dev/ttyUSB01)Then how can I configure my modem?
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Jun 15, 2011
I've Reliance Broadband internet modem . very first time only it was connected but next onwards it's not connecting , I am trying last one month to connect internet , I am tired .I had seen lot of thread related to this problem but it's not connecting, my device is identified by network manager and i entered user name and password ,connecting process is going on but finally it's not connecting . i installed wv dial and usb modeswith data
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Aug 11, 2010
making/buying a 3 pin j2 serial connector for my computer to connect to a programable chip
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Jan 23, 2010
The problem is that when I connect my phone to my machine FC11 x64 via USB and use the phone as a modem NetworkManager does not recognise the phone as a modem. The phone works well on my laptop which is FC11 32bit system, NetworkManager detects it and sets it up as eth2 and away I go, no problems at all. I would like to ask the community how can I go fault finding to find out why it does not work. #lsusb shows that the modem is being detected by the system but beyond this I don't know where to look and get things going.
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Jun 23, 2010
I am using ububntu 9.10,and have a cable modem internet connection. All I have is an ethernet cable given to me,and when plugged in a windows machine and fire a browser am redirected to default login page where i can login, but when i plug it into my linux machine,i cant get the same done. In network connections it doesnt shows my autoeth0, i have deleted my existing dsl settings(not autoeth0),made a new wired network,i doubt what should i put into MAC addrs field(i have put my machines mac given by lshw -c network.) What should I put in DHCP client id? Anyways when i click on network connections it says under my wired connections-device not configured properly.
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Jul 14, 2010
In my attempt to get my USB 3G modem to work on Ubuntu 10.04 netbook edition I have made some progress to the point of getting the driver for it up and running, though connecting to the Internet after defining a profile is an issue. I have followed this ubuntuforums thread simply to get started with the usb modeswitch to get the usb modem identified by the system.
Debug information:
uname -r:
Code:
2.6.32-23-generic
cat /etc/issue:
[code]...
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May 22, 2011
I've recently installed Natty and the only problem I have with it so far is attempting to connect my Huawei E5830 Three Wireless modem via USB and successfully connecting to the Internet from it. I've fiddled around with the network settings and nothing, I've also done some work in the Terminal to try and correct the problem.
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Apr 25, 2009
I was recently asked to get a 3G ZTE 633 modem (not in stores) to connect to the internet whenever it was plugged in. I had it successfully working on my Ubuntu Gutsy Gibbon machine but it does not work on Fedora 10 which is where it is required to work. When the 3G modem is plugged in I use a Udev rule to run usb_modeswitch which changes it from being in usb storage mode to being in modem mode. This part works fine. I then run a second udev rule (on the modem device), this should run a script which connects to the internet. Unfortunately it falls over here. The script does run but it will not connect. However if I run the script manually from root it works fine. I guess that it is a permissions issue.
The device permissions are:
crw-rw---- 1 root uucp 188, 0 2009-04-26 11:31 ttyUSB0
crw-rw---- 1 root uucp 188, 1 2009-04-26 11:31 ttyUSB1
crw-rw---- 1 root uucp 188, 2 2009-04-26 11:31 ttyUSB2
The script and script folders permissions are:
drwxrwxrwx 2 root root 4.0K 2009-04-26 11:46 .
drwxr-xr-x 23 root root 4.0K 2009-04-26 11:13 ..
-rwxr-xr-x 1 root root 95 2009-04-26 11:46 run_internet
One thing to note is that there are three udev devices associated with the modem. They are ttyUSB0, ttyUSB1 and ttyUSB2. I use ttyUSB2 to talk to the modem when connecting. Here are the files. If you require any more let me know:
The first udev rule:
SUBSYSTEM=="usb", SYSFS{idProduct}=="2000", SYSFS{idVendor}=="19d2", RUN+="/usr/bin/usb_modeswitch"
The second udev rule:
SUBSYSTEM=="usb", SYSFS{idProduct}=="0031", SYSFS{idVendor}=="19d2", MODE="0666", RUN+="/outputs/run_internet"
The script:
#!/bin/bash
/bin/echo script
/usr/bin/wvdial &
cp -f /etc/telstra_resolv.conf /etc/resolv.conf
The wvdial config file:
[Dialer Defaults]
Init1 = ATZ
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
Init3 = ATS7=60 S30=0 S0=0
Init4 = AT+CGDCONT=1,"IP","telstra.internet"
Modem Type = Analog Modem
Baud = 9600
New PPPD = no
Modem = /dev/ttyUSB2
ISDN = 0
Dial Command=ATD
Phone = *99#
Password = user@bigpond.com
Username = password
Stupid Mode = 1
So what am I missing? I suppose it is related to device permissions. Why does the "mode" command not work? With what rights do udev rules run?
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Apr 24, 2010
i have the following challenge: i have a Bluetooth GPS device that i have connected to my linux notebook. but now i also want to use the same device (or better, GPS data stream) for my Navigation device (HP Ipaq with TomTom). make an serial port bluetooth service (sending) that my Navigation device can connect to. copy the incoming bluetooth serial port data stream to the outgoing bluetooth serial port.
i have already installed GPSD so i have the TCP port where the GPS data is available for everything on my notebook. but now i also want it to send it out through bluetooth.
1. is there someone out there who already did this?
2. how to make an bluetooth serial port service on Fedora 12?
3. how to copy a data stream from 1 device to the next device?
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Jul 24, 2010
There has been a lot of effort invested in getting external USB connected anything to work well during the connect then disconnect processing. It seems that there are troubles with OEM serial digitizers like those built-in for a tablet-PC. The built-in OEM devices do not have the same sort of connection events to trigger device creation and configuration.
Does anyone know how to make all of the find-hardware then create configuration processing visible? While I find several postings that describe "... edit xorg.conf ..." but then those edits don't want to work with the recent evolution in Xorg and X11-server configuration that deprecates (abandons?) xorg.conf. Does anyone understand what is going on with Xorg and X11-config to help me get my tablet working? Has anyone used an external USB tablet, then adapted those configuration details to get an OEM tablet working? I know that every tablet is different, but if the external device connect-creates-config process works best, it seems there might be value here.
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May 24, 2010
I have Installed Virtual Box 3.1.6 on my system. The host is running on SuSe 11.2 and I have installed the SuSe 11.2 as guest OS on the VBox. I have a another system in which I installed Win XP. How to make serial port connection between the VBox and Win XP system.
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Jan 18, 2011
I am having a Sony Ericssion Aspen M1i window's mobile which I need to connect as modem to my fedora 13 laptop....
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Apr 3, 2010
running Ubuntu 9.10 x64bit fresh install and updated.When I connect with my 3g um150 modem it disconnects my home network?? I cannot get them to run both at the same time and of cousre the next thing would be to share the internet connection.
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May 29, 2010
I use Banglalion WiMax usb dongle modem. I like to use it in ubuntu os. When I connect it to my Desktop PC's usb port, it respond nothing.
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