Modem is the abbreviation for "Modulator/Demodulator", a device to translate digital signals for transport over analog lines, typically but not only phone lines.

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airmon-ng wlan0 help

I'm extremely new to all this so apologies in advance. I've been told to try and hack into my modem and I was linked to here. I'm up to step four where I airmon-ng start wlan0 but instead of saying ...
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33 views

Dial up HSF usb Conexant modem linux driver for ARM architecture

Hello I've being trying to install my usb HSF Conexant dial up modem to my Raspberry PI 2 B which is running Raspbian OS. I checked a company named Linuxant that makes these kind of drivers but ...
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114 views

“Couldn't find support for device at '/sys/devices/pci0000:00/0000:00:14.0/usb2': not supported by any plugin”

I just buy a new laptop: "HP EliteBook 840 G2". I use this computer during my travel into the train. I buy this laptop because, It have a 4G modem integrated. This module work on Windows but I can't ...
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60 views

Setup Huawei 3G modem under NetBSD

NetBSD 7 see my modem as u3g with ucom's. How I can setup it to work? Is NDIS available or only RAS?
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30 views

3G modem side step

I've been tinkering with a Huawei 169 3G modem on Raspbian (Debian) with wvdial, gradually improving its penchant for disconnecting. When it does disconnect ppp tries to reconnect but can't because ...
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39 views

Using shared serial modem

I'm trying to use on Solaris box modem connected to Linux box via serial port. Sharing is made from socat. Server command(linux): socat tcp-l:54321,reuseaddr,fork ...
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1answer
144 views

How can I know which serial port corresponds to a PCI card?

I have a vehicle computer with a internal 3G PCIe card for cellular communications, but I can't figure out which serial port I have to use in order to send AT commands. This computer also includes a ...
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308 views

Could not resolve host: mirrorlist.centos.org

I did a fresh install of CentOS 7 on an Acer Inspire T. It is a terminal-only installation (no GUI). I connected the CentOS 7 box to a cable modem via an ethernet cable, and the cable modem is ...
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72 views

socat for sharing serial port from linux to solaris

I'm trying to share serial port from linux box to solaris 10 box (solaris machine don't have serial port). While doing the same commands from linux box (modem-server) to other linux box - everything ...
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65 views

FriendlyArm pppd problem

I have two files in FriendlyArm. 1-) wcdma is an option file to use with "pppd file" nodetach debug lock /dev/ttySAC2 115200 user "" password "" nocrtscts show-password usepeerdns noipdefault novj ...
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27 views

Sending command to an already mounted modem

I'm working on a IMX6 based board, and I need some advice to handle my modem. I've successfully configure the modem, and mounted the ppp. The modem is working fine and everything's great, but now I ...
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1answer
213 views

IP address assigned when using 3G USB modem

If I use a 3G USB modem with a SIM card on my linux machine, do I get the IP address assigned by the carrier just as my phone when it uses the same SIM card, or do I get a different IP address (as it ...
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66 views

Making a 64 modem pool work on Ubuntu

I have a 64 port siemens wavecom modem pool connected via USB to a Computer running Ubuntu. I am trying to create a python script that interacts with the modems for some automated testing project but ...
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55 views

Trying to get a usb modem to run with wvdial

$ sudo wvdialconf Editing `/etc/wvdial.conf'. Scanning your serial ports for a modem. ttyS0<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud ttyS0<*1>: ...
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1answer
59 views

pcap file 20 times smaller than ifconfig TX/RX difference for same period

I run tcpdump on a usb modem in network card mode. [ 18.260000] cdc_ncm 1-1.1:1.1 wwan0: register 'cdc_ncm' at usb-ehci-platform-1.1, Mobile Broadband Network Device, 0c:5b:8f:27:9a:64 I run it ...
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76 views

USB 56k modem not detected

I have this USB 56k modem which I'm using to write some home automation software that will let me know when my home phone is ringing. My software works on my Ubuntu 14.04 LTS laptop, with my modem ...
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621 views

Huawei E3372s + Linux (Rasbian), Incoming connections problem

I have a Linux-based OS (Rasbian) running on Raspberry Pi 2+ and it is using Huawei E3372s 4G/LTE USB Stick for internet connection. All my outbound connections work perfectly (Huawei USB mode ...
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65 views

How to communicate with modem over Ethernet?

I have an old modem I was considering repurposing. The first step I thought to do was connect my computer with the modem and try to map the open ports. I found that, upon connecting the device, that ...
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1answer
271 views

4G modem on an embedded 2.6.32.9 kernel on a Parrot AR Drone 2.0

I am attempting to compile support for a Huawei E3276 usb LTE modem for an embedded Linux/BusyBox installation on a Parrot AR Drone 2.0, which is based on kernel 2.6.32; however, I am running into ...
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1answer
324 views

How to send AT commands to modem once the connection is established?

I have a zte 3g modem. I use carrier provided dialer for connection establishment. Once the ppp connection is active, i would like to send some AT commands(for ex. Query signal strength, AT+CSQ). But ...
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1answer
185 views

List serial devices on FreeBSD

On FreeBSD, I'm looking for a way to list serial communication devices. The computer has two of them installed: An on-board serial console (ttyS0), and an internal analog modem. I can find out about ...
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171 views

How do I ask NetworkManager/ModemManager to run a program before pppd?

The story is not so important for this question, but here it is: the GPRS modem is locked-in to the vendor's software (it doesn't work, if it doesn't receive a correct response to a "challenge" it ...
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172 views

ZTE MF190 modem wont install in linux mint

I have currently installed Linux Mint cinnamon 16.1. I tried to put in my ZTE MF190 modem. But the computer can't read any details of any driver. What can I do?
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725 views

What is the complementary command to 'rx' for xmodem transfer?

I have an installation of busybox on an embedded linux system that comes with a great little utility called rx: rx FILE Receive a file using the xmodem protocol This is perfect for transferring ...
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2k views

USB 3G/4G modem problem

I have LTE USB modem identified as ID 0408:ea16 Quanta. It doesn't have problem with my windows machine, but with my fedora (kernel 3.18.5-201) it is not working. I've found some info in the ...
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374 views

How to connect ZTE MF 823 Surf Stick in virtual Linux?

I have an LTE Surf Stick which I would like to get working inside my virtual machine. The Stick is called "ZTE MF 823". I am running openSUSE 13.1 with NetworkManager and I was not able to find any ...
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159 views

My Mobile Internet connection is disabled even though it is enabled

I don't know how to better formulate the question. I have enabled the Mobile Broadband, and the system correctly detects that I have a Vodafone CZ HSUPA connection available on the SIM card. However, ...
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3k views

Modem is not being detected (Why I've to usb_modeswitch?)

I am using Trisquel 7.0 LTS and mobile broadband (Net-Setter) to establish connection. Following states (1-4) are showing different conditions/situations for clear understanding of problem. ...
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47 views

How to enable second SIM slot in ALIX6F2 and how to switch 3G to it from the 1st one?

I am trying to enable the SIM slot under the RF card but with no success whatsoever. I'm using Voyage 0.8 (a stripped off Debian distribution) as an operating system. A bit of searching landed me to ...
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227 views

mgetty stopped working as dialin after opensuse upgrade

Background: OpenSuSE 11.4 worked well for a couple of years. mgetty was configured to listen to /dev/ttyS0 and work as dialin link. Updated system to OpenSuSE 12.1 > 12.2. > 12.3 > 13.1 and lost ...
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54 views

Switching from GSM to CDMA

NetworkManager has crashed and now it's showing CDMA mobile broadband as a GSM device. How I can switch to CDMA mode? I'm using Ubuntu.
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357 views

Gobi 2000 not detected on Lenovo X201

I recently bought a used Lenovo X201 wich includes a Gobi 2000 3G modem, but I can't get it working for the simple reason: the USB device does not appear to show up in the kernel. uname -r output: ...
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132 views

Simple telephone system to record kids' “calls”

My four year old daughter loves playing with an old POTS phone. She has these amazing conversations on it and I thought it would be nice to record them, and perhaps even let her pretend to make ...
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1answer
149 views

Serial port's modem lights up, but can't communicate

My MB has builtin UARTs (Supermicro X10SAE). I've got an external modem hooked up to /dev/ttyS0. I'm running CentOS7. Without minicom running on /dev/ttyS0: The modem has CTS on. With minicom ...
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613 views

4G hostless modem and rndis_host problem

I'm trying to connect 4G modem Quanta 1k6e to my wl500g router with OpenWRT BARRIER BREAKER (14.07-rc2, r41815), but I have a trouble. When I attach device in log happen: Thu Aug 14 21:58:06 2014 ...
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2answers
2k views

How to set WiFi password on modem - buffalo airstation g54

I borrowed a WiFi modem from a friend - Buffalo Airstation G54 . I don't know about installations procedure, I just would like set a password to use the wifi, since now it is a free connection. I ...
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213 views

Chat application for monitoring with scripts

I am looking for a chat application, which would have the ability to interact with a shell script. I need this for a home project. An example of the usage would be: A client sends a chat message to ...
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1answer
391 views

How configurable is MPTCP?

I work on embedded Linux devices that usually have hard wired Ethernet as well as cell modem connections. If I were to use MPTCP would it be possible to easily configure the system to use eth0 all ...
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1answer
324 views

BSNL 3G USB modem not connecting

I am using Arch linux (fully updated). I have been trying to get my BSNL 3G usb modem to work to no avail for the past couple of hours. I have already installed modeswitch, wvdial, modem manager, ...
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1answer
1k views

Which TCP congestion control algorithm is best for low speed radio modems?

On my project we have remote Linux nodes that communicate over the Internet via very low speed CDMA cell modems. The bandwidth on these modems is about 2kbyte/second and the RTT back to the server is ...
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1answer
214 views

Send Fax with GSM modem on hylafax?

I have a couple of questions related to using a GSM modem for faxing. I wanted to know if it's possible to send faxes with the hylafax-server from a GSM modem? If possible can you please explain how ...
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1answer
192 views

How to handle DHCP on two network interfaces, one clobbers the other's /etc/resolv.conf

I have an embedded Debian Linux system. It has two network interfaces, eth0 and ppp0 via a cell modem. The problem I have is that when the system boots up it gets an address via DHCP on eth0. If ...
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1answer
1k views

How to get address of connected USB modem?

I just connected my N81 telephone as USB modem to Linux Mint 14. All works fine, just wondering how to find a full path to this device, something like /dev/tty*.
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2answers
2k views

How can I tell if PPP compression is enabled for modem?

I'm using Debian Linux on an embedded system, we use ppp to connect to the WAN via a CDMA modem. I want to find out if compression is being used by ppp. In my /var/log/messages I see the line: ...
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597 views

High RX packet error count with modem - how to analyze?

I'm testing a CDMA modem on my Debian embedded Linux system. I'm doing some wgets of large files and am seeing the connection drop now and then. Looking at the ifconfig output for the PPP interface ...
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1answer
7k views

Linux PPP : how to debug disconnects with exit code = 16?

I'm using pppd and wvdial on my ARM Linux embedded system. I have a CDMA modem connected via a serial port and am connecting to the Verizon network. I am seeing that several times per day pppd exits ...
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1answer
787 views

configure gsm connection using nmcli

I have a system without X display and I want to use nmcli to configure my cell modem to connect to a certain apn. I can get it going with this modem just fine on Ubuntu (with X) and I would like to ...
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1k views

How to send a file using xmodem protocol from the command line

Want to shell script this and my scripting skills are rather limited so please bear with me. Have scope attached to RX and TX lines of the serial port. If I do: cat /dev/ttyS0 Get a steady stream ...
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1answer
572 views

Determine 2G or 3G connection

I am using WvDial to dial my USB modem up to my ISP. But how can I tell what network I am connected to: 2G or 3G?
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1answer
2k views

Troubles establishing connection with wvdial

I have a Huawei cell modem EM680 with which I can establish a connection on my Ubuntu 13.10 box just fine. I plug it in and I can establish a connection using the Connections Manager. I have a box ...