Hi folks.
Recently we have encountered problem with RB951UI-2HnD and RB951G-2HnD.
We are using this device with a 3G USB Dongle (Huawei E173), with a USB extension cable.
Unfortunately it seems that the power output of the USB interface of the RB951 is very poor.
When we try to force the dongle to GPRS (2G) only (it consumes more power I guess) it just dies and becomes inactive.
When I reset the dongle, it goes UP for few seconds then it dies again.. I really can't manage to make it work on GPRS.
When I put it on 3G, it works very unstable. When I try to pass some traffic and especially when the mobile network signal is weaker (I guess it needs more power to transmit stronger), it stops working and become inactive.. until I do power-reset or re-insert the dongle. Then it might work for a while and die again..
Without the USB extension cable it seems to work fine (tho haven't tested it for a longer period).
I would like to mention, that we are also using RB751U-2HnD and we don't have any similar issues with it (even with 3 extension cables linked together), so it seems the problem is with the 951 series only..
I am using ROS 6.15 with the latest Firmware.
I have tried downgrading to older ROS (5.26) - no difference, I tried going back to 4.x but the 951 won't work with it and it completely dies (needs Netinstall).
Have anyone encountered this kind of issue and is there any way to fix it ?
Best regards.