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alexrm1x
Joined: 01 Oct 2006
Posts: 2
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 Posted: Sun Oct 01, 2006 7:55 pm Post subject: GlobeSurfer ICON or another USB 2.0 / PCI option |
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Hello,
I have to communicate 2 Linux systems with UMTS or another technology. DSL is not possible in the location of one of the systems, however, there is 3G vodafone signal.
I'm thinking about purshasing an UMTS modem for Vodafone in Spain.
I have Linux Debian latest release and I'd like to know if anyone of you has tested the GlobeSurfer ICON USB or another USB 2.0 / PCI modem.
Many thanks!
alexrm1x.-
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alexrm1x
from the Sunny Spain |
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Paul
Site Admin
Joined: 08 Oct 2004
Posts: 455
Location: UK and Belgium
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| Posted: Sun Oct 01, 2006 10:17 pm Post subject: |
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I have an Icon but have not tested it yet. I see there is a utility to disable the flash disk. I'll try it out and let you know.
Not sure how well the standard USB serial drivers will work at 1.8 Mbs though.
Paul |
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josh
Joined: 03 Oct 2006
Posts: 21
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| Posted: Tue Oct 03, 2006 11:10 pm Post subject: GlobeSurfer Icon |
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I have the GlobeSurfer Icon running on my Linux router and I like it a lot.
Vodafone gives HDSPA away to UMTS users in Germany until the end of October, and my connection is quite good. Typical downloads with the Icon are around 164 kB/s.
I find the USB connection type quite handy. It's usable with notebook and desktop PC, even my modest booksize router likes it.
Plus: you can put it where the best reception is (sometimes 30 cm - or one foot - make a big difference). Saves the external antenna.
It doesn't even need special drivers or firmware for Linux, just my little mode switch tool to run once after reboot or reconnect. After that it is usable as a standard USB modem. I use the "option" module from the kernel though which I adapted with very little changes.
I don't know any other 3G+ devices, this is my very first one.
Mind you that it is a USB 1.1 device. Since the maximum transfer rate is said to be 12 Mbit/s this is plenty. No problem on a 2.0 port. |
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a2polo
Joined: 06 Oct 2006
Posts: 1
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| Posted: Fri Oct 06, 2006 7:29 pm Post subject: just my little mode switch tool |
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Is this tool that you mention available for public download?
- Kevin |
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alexrm1x
Joined: 01 Oct 2006
Posts: 2
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| Posted: Mon Oct 09, 2006 9:06 am Post subject: |
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Hello,
Many thanks for your answer, I'm going to search for a GlobeSurfer modem and make some testing as well.
Keep you posted.
Thanks!
alexrm1x.-
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alexrm1x
from the Sunny Spain |
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josh
Joined: 03 Oct 2006
Posts: 21
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simontol
Joined: 16 Oct 2006
Posts: 2
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| Posted: Mon Oct 16, 2006 9:19 pm Post subject: all Ok but maximum download speed 45/50 KB/s |
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I tried both usbserial and option modules,
Both works and i get /dev/ttyUSB*
I can connect, I use KPPP...
Kppp says I'm connected at 1800000
But my maximum download speed is 45/50 KB/s
I think I'm on UMTS and not using HSDPA benefits.
With windows I get 140/160 KB/s
What's wrong? |
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josh
Joined: 03 Oct 2006
Posts: 21
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| Posted: Tue Oct 17, 2006 7:35 am Post subject: Re: all Ok but maximum download speed 45/50 KB/s |
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| simontol wrote: | I think I'm on UMTS and not using HSDPA benefits.
With windows I get 140/160 KB/s
What's wrong? |
Since everything else is working it might be an issue with modem initialisation.
I don't know kppp's features, but if you are able to send additional modem commands you might try one of these:
(from plzk.de)
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at_opsys=0,2 (GPRS only)
at_opsys=1,2 (UMTS only)
at_opsys=2,2 (prefer GPRS)
at_opsys=3,2 (prefer UMTS)
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Doesn't help if this is a HSDPA problem though ... I'll try and find more AT commands. |
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josh
Joined: 03 Oct 2006
Posts: 21
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| Posted: Tue Oct 17, 2006 1:46 pm Post subject: |
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Some more information:
For HDSPA status see this topic:
How to select network type
But I'd rather rely on a defined reset to defaults like the Windows driver is doing with the good old "AT&F". There are probably unwanted things that kppp is doing when setting up the modem ...
And there is a list of AT commands the "Globetrotter" family supports, not quite up-to-date but voluminous:
http://support.option.com/support/faq.php?do=article&articleid=67 |
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Davesworld
Joined: 08 May 2006
Posts: 25
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| Posted: Wed Oct 18, 2006 6:16 am Post subject: |
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| Paul wrote: | I have an Icon but have not tested it yet. I see there is a utility to disable the flash disk. I'll try it out and let you know.
Not sure how well the standard USB serial drivers will work at 1.8 Mbs though.
Paul |
Not very well without modifications. The standard chunk size is way too small and needs to be upped to 2k as a minimum or you'll congest and bog down. At least in the 2.6 kernels you can force the Option usb_serial drivers as you have pointed out here in another thread but might be best to just use the Junxion code to fix the usb problem.
http://www.junxion.com/opensource/linux_highspeed_usbserial.html |
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simontol
Joined: 16 Oct 2006
Posts: 2
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| Posted: Thu Oct 19, 2006 4:34 pm Post subject: It works!!! |
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I've patched usbserial.c compiled and modprobe with maxSize=2048
Now I have 780kbs DL and 220 kbs UL.
Thanks to davesworld and other people! |
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