***** Find what is calling USB modem power off and disable it.
***** No poweroff, no error.
Some modems power off and power on again, i try to find what is causing this error, without success. Maybe some errors in power suply or modem just reset, because i try it with 4, 10, 20 and 30 modems, and the problem persists.

In my search, google and other forums, i found someone talking about modem resetting for own. 
Sometimes the user wan't to change de SIM in modem, and remove it and put it again, without make a dettach in my interface/system.
Or if he not remove the modem and just change de SIM (o.O), its a request of many users of my system using E303 or other modems.

I identify this, because i'm attached in ttyU0.0, ang get event im my source or a CME-ERROR 10, if modem just changed SIM, then i reset the modem with AT command ^RESET.

I'm using mod_xml_curl to get interfaces info, and ESL events to manage this... Then i make a "gsm remove xxxx" and when modem arrive i make a "gsm reload". 

This way not affect the calls in progress.

I talk with Shlomi Agiv, and apply some functions of his patch, now i'm just making tests....

Now i'm having some problems, just when i call a "gsm remove" in ESL, its stop to reply, even when i send other command, like "sofia status". It's the same when i send command with fs_cli...

Before ask, i make some debugs, change source, put log and other things..
I ask, because some times other people have the same problem!
Thanks for the reply...