Hi Giovanni,

I'm in the testing phase in a Mini ITX board (Atom D2550 + debian 7.6 32b) and DUB-H7 USB HUB​. I use 4 devices simultaneously (4x 500ma = 2A) and yet everything perfect!

7-Port USB 2.0 Hub (500ma on all seven front ports, but 3A in total)

http://www.dlink.com/uk/en/home-solutions/connect/usb/dub-h7-7-port-usb-2-0-hub

Do you recommend some other HUB?

Doug

2014-09-29 10:23 GMT+01:00 Giovanni Maruzzelli <gmaruzz@gmail.com>:

all this kind of problems come from lack of USB bus electrical power.

Use a wall powered (eg: with a "brick" power supply) USB hub between FreeSWITCH and dongle.

No software way to go around this.

And be sure the hub deliver enough power! (check the specs for your dongles power needs, add them up and use an USB hub with more than that continous power delivery).

Internet dongles are power hungry !

-giovanni

Sincerely,

Giovanni Maruzzelli
Cell : +39-347-2665618

On Mon, Sep 29, 2014 at 11:12 AM, rumodigital <webmaster.rumodigital@gmail.com> wrote:

Hi,

Really, can be a major headache, many problems can be solved with the use of a self powered USB hub... yet I had no problems, but for example, I tested with an old pc I have, and when he received a call the module disconnected and blocked the USB port.

Which versions of Pi and what model of hardware that use?

Doug

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