Hello,

I use four modems in simultaneous (SMS, USSD, voice), 1x E169, 3x E1550... to date, approximately 7 days of uptime, all excellent. I'm in the testing phase in a Mini ITX board (debian 7) and DUB-H7 USB HUB, but I intend to create a gateway gsm using the Raspberry Pi, does anyone have any experience to share?

Have a nice weekend,

Doug