RouterBoard 912 3G modem will not connect

Hardware MikroTik hardware general
1

I have a RB912UAG-2HPnD: RouterBoard 912 that I am trying to connect a 3G modem to. The modem is a Huwei E173 which is on the supported hardware list.

The routerboard finds the USB modem OK and I have entered the correct details for my provider as I have connected using them and the SIM in another 3G router.

Attached is the sequence I get. The modem connects and authenticates however it is looking for a peer when I have not asked it to connect to anything. It seems to connect however it immediately disconnects for no readily apparent reason.

Attached is a screenshot of the logfile.
PPP.PNG

2

disable dial-on-demand option and will always keep the connection when the interface will be enabled.

3

Capture6.PNG
Dial on Demand is disabled. I have further isolated the problem down to an LCP Echo Request not being answered as in the attached screen shot.

I know the ISP is correctly responding to LCP echo requests as the modem will dial up and connect OK in any other system including a $12.00 MiFi.

Why should the routerboard not respond correctly? I have tried all possible combinations of data channels.

4

In your first post though, the last log entry says the modem has connected…

My 4G USB modem does that echo thing too sometimes. I just leave it or disable then enable the PPP interface again. Not sure why it happens.

5

pplease make sure you have upgraded the RouterOS to v6.13 and also upgraded the BIOS to v3.14 and then check again.

6

Upgraded the firmware and RouterOS and it worked perfectly - thank you

I now have full connectivity with the E173