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[Discuss] getting a USB modem working with Linux
- Subject: [Discuss] getting a USB modem working with Linux
- From: tmetro+blu at gmail.com (Tom Metro)
- Date: Tue, 01 Apr 2014 18:35:35 -0400
- In-reply-to: <CAGLxeWKg9sWj3w9v8ShS44qEkyNLPZ=O++KP=+xhHYGVMa3T=Q@mail.gmail.com>
- References: <CAGLxeWKg9sWj3w9v8ShS44qEkyNLPZ=O++KP=+xhHYGVMa3T=Q@mail.gmail.com>
MishaStrGm wrote: > I got Usb- Rj11, Usb - phone line modem. > Zoom 3095 You explained off-list that you had two USB modems: a Zoom 3095 and a Trendnet TFM-561u. I was surprised to see that the Linux Modem HOWTO[1] says that even ("new" style) external USB modems[2] can be built like "winmodems"[3] and require special drivers that implement a portion of the signal processing. 1. http://www.tldp.org/HOWTO/Modem-HOWTO.html 2. http://www.tldp.org/HOWTO/Modem-HOWTO-2.html#ss2.9 3. http://www.tldp.org/HOWTO/Modem-HOWTO-2.html#soft_modem My recommendation is that you do examine the output from lsusb to identify the modems at the hardware level. You could do this using commands like: With no modems attached: % lsusb > no-modems Then plug in the Trendnet modem, and run: % lsusb > trendnet And now see what changed: % diff -u no-modems trendnet Post the results in a reply here. Repeat this for your Zoom modem. The 'lsusb' output will be like: Bus 002 Device 005: ID 064e:a117 Suyin Corp. The device identifier (like 064e:a117) can be used in a Google search along with "linux" or "ubuntu" to often turn up discussion of how other people got drivers working for that device. Off list you wrote: > i try to install Zoom 3095. > Gnome PPP tell error, no dial sound. > It does not look that modem is working. Trying to get PPP working is skipping ahead. You might have gotten lucky, but it should be easier to troubleshoot by running the more basic modem tests that are mentioned in the Modem HOWTO. But the first step is figuring out what serial device the modem is appearing as (either using the kernel's built-in USB serial driver, or the emulated serial interface provided by the "winmodem" driver). Until you do that, and determine whether you need to install a specialized driver for it, you can't really proceed to trying modem applications like PPP. My modem knowledge with Linux is very rusty. Anyone with more current knowledge that can give this user some guidance? (Just recently I briefly wrestled with trying to get a couple of "winmodems" built-in to laptops working, with the idea of using them with Hylafax to send faxes, but the probing script provided by linmodems.org failed to definitively identify the modem hardware. It's best guess on one laptop was that the modem hardware was piggybacked on the Intel high definition sound hardware built-in to the chipset.) -Tom -- Tom Metro The Perl Shop, Newton, MA, USA "Predictable On-demand Perl Consulting." http://www.theperlshop.com/
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