<div>Hi!</div>Huawei USB modems does not have accessible via USB protocol serial numbers. At least E1550, E153 and E171.<div class="gmail_extra">Best wishes,</div><div class="gmail_extra"> Dmitry.<br><br><div class="gmail_quote">
2012/12/16 Nandy Dagondon <span dir="ltr"><<a href="mailto:nandy1925@gmail.com" target="_blank">nandy1925@gmail.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Thanks for the feedback Giovanni. Re fixing the ttyUSB port assignment, I have searched a guy made a script to scan USB serial numbers using udev, then created symbolic links. Will try it out later.<span class="HOEnZb"><font color="#888888"><br>
/Nandy</font></span><div class="HOEnZb"><div class="h5"><br>
<br><br><div class="gmail_quote">On Thu, Dec 13, 2012 at 7:02 PM, Giovanni Maruzzelli <span dir="ltr"><<a href="mailto:gmaruzz@gmail.com" target="_blank">gmaruzz@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>On Thu, Dec 13, 2012 at 4:44 AM, Nandy Dagondon <<a href="mailto:nandy1925@gmail.com" target="_blank">nandy1925@gmail.com</a>> wrote:<br>
> I have run GSMOpen on CentOS 5.7 defying the Wiki advisory. Questions:<br>
<br>
</div>I would invite you to go for the OS distros detailed in the wiki page.<br>
You'll probably encounter problems with different distros, and you're<br>
on your own to solve it.<br>
<div><br>
> 1. What is the maximum number of USB modems tested? Can we get the numbers<br>
> and the CPU used?<br>
<br>
</div>I've heard about 48 concurrent, and 64. Me personally have tested with<br>
5. No CPU consumption. The critical part is the USB BUS. So use<br>
cascading and POWERED good usb 2.0 hubs<br>
<div><br>
> 2. I'll be installing multiple modems each connected to a different mobile<br>
> network. Is the /dev/ttyUSB assignments constant for every modem? Meaning<br>
> it doesn't change if I plug it on different USB jacks.<br>
<br>
</div>it will change not only if you change USB port, but also randomly if<br>
you stay on the same USB port and reboot (and sometimes also without<br>
rebooting). That's a "feature" of Linux distros (a demented one,<br>
cannot understand why they choose this behavior).<br>
<br>
Soon or later I'll look into this, and come out with a solution (I've<br>
made some preliminary research and reasoning about in the past).<br>
<br>
If you have a commercial interest in that, and a real budget for it,<br>
contact me in private as consultant, or put a public bounty on it.<br>
<br>
-giovanni<br>
<br>
--<br>
Sincerely,<br>
<br>
Giovanni Maruzzelli<br>
Cell : <a href="tel:%2B39-347-2665618" value="+393472665618" target="_blank">+39-347-2665618</a><br>
<br>
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