MR3020 and MA260: endless 'unplugged' status

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MR3020 and MA260: endless 'unplugged' status

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MR3020 and MA260: endless 'unplugged' status
MR3020 and MA260: endless 'unplugged' status
2016-02-10 17:36:36
Model :

Hardware Version : Not Clear

Firmware Version :

ISP :

I am using:
* MR3020 (Ver 1.9, firmware version: 3_17_2 140610 and 150921)
* MA260 with T-Mobile Business (Germany) and Vodafone (Germany)

Issue 1) modem "unplugged"
In regions with weak mobile service coverage, the router is trying to connect. After a while (about 5 minutes) the MA260 modem is 'unplugged'. In about half of the time, the router remains in this state - even if mobile service comes back, the router and modem remains in this 'unplugged' state.

Issue 2) "re-enter SIM pin"
In random occasions, but very often, the routers forgets the SIM pin. It asks the user to reenter the pin. The device was only switch on and off - there was no change in configuration and no change in hardware (thus, MA260 was not plugged in/out neither was the SIM changed)

We are using a lot of these devices - all with the same behaviour. They are mounted on a shuttle bus providing WiFi service to passangers. Both issues above prevent us from using the devices for this application.

Is there a new firmware to adress those issues ?
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#1
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5 Reply
Re:MR3020 and MA260: endless 'unplugged' status
2016-03-25 17:54:48
The MiFi products are better to provide Wifi in bus.
It will be more convenient and don't have compatible issues.
http://www.tp-link.com/en/products/details/cat-4692_M7350.html
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Re:MR3020 and MA260: endless 'unplugged' status
2016-03-29 17:23:28
Thank you for your reply.

The MiFi products have the simple problem that somebody has to switch them on manually. Thus, I can not do a simple wiring between 'ignition power' to the MiFi device. My bus driver needs to push a 'on' button on the MiFi product to get going. Sounds simple, but is a 'killing' no-go.

(when the bus is parked, the systems has to be shut down).

Thanks for your help.
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#3
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Re:MR3020 and MA260: endless 'unplugged' status
2016-03-30 14:46:44
When signal is weak,the device(3020) need more power to receive signal.
So I think maybe the power supply is not enough on the bus?
The standard input of 3020 is 5V/1A.
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Re:MR3020 and MA260: endless 'unplugged' status
2016-04-07 18:40:36
We double checked power supply: Using different properly sized power supply, even USB wallplug supplies, show no difference in behaviour.

Any ideas ? - since it is repetitive behaviour, maybe your developing engineers could have a look at it ?
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USB stability issue
2016-05-30 15:16:24
Doing more research, there are quite a few discussions pointing out this might be a "USB stability issue" related to the AR9331 processor used.

There are also hints, this could be solved in software - @TP-Link: please forward those to your development people, hopefully they can provide a firmware update:

http://news.ezsbc.com/openwrt-ar9331-development-board/
http://forum.arduino.cc/index.php?topic=193540.5;wap2
https://forum.openwrt.org/viewtopic.php?id=39956&p=12
http://www.8devices.com/community/viewtopic.php?f=13&t=877
https://github.com/8devices/carambola2/commit/b08b59ceb4e7f0bad4c0b17e703e1e5c4e168923


Thanks !
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