AT&T + Sierra Wireless MC7700 + Routerboard M11G?

RouterOS General
1

Basically what I’m trying to do is make a low cost connectorized cellular router for industrial control/data acquisition. I have a Sierra Wireless MC7700 mini card that I know is provisioned and working properly because I’ve tested it on a Windows desktop with a mini card to USB adaptor and the AT&T “All Access” software.

Things I have:
AT&T account with data only plan
Working SIM
AT&T phone number for the card
AT&T 4 digit password for the card
Sierra MC7700 card with latest firmware: SWI9200X_03.05.29.03ap r6485 CNSHZ-ED-
RBM11G running RouterOS 6.40.5

The problem is that I have no idea what to do. I’ve read through the documentation on the LTE and PPP interfaces, but the writers seem to take a lot for granted. I tried finding a straightforward tutorial on how to setup this card but still wasn’t able to find any concrete answers. Should I be using direct IP or PPP? If I have to use PPP, what do I use for the username and password? How can I enable the “LTE” interface? I tried running this command

/port firmware set ignore-directip-modem=no

then rebooting, but it didn’t really change anything.
Even though the card is plugged in and recognized, I see no entries in the LTE interface tab.

[admin@MikroTik] > /system resource usb print 
 # DEVICE VENDOR                                                   NAME                                                   SPEED                                                  
 0 2:1    Linux 3.3.5 xhci-hcd                                     xHCI Host Controller                                   5000 Mbps                                              
 1 1:1    Linux 3.3.5 xhci-hcd                                     xHCI Host Controller                                   480 Mbps                                               
 2 1:2    Sierra Wireless, Incorporated                            MC7700                                                 480 Mbps  
[admin@MikroTik] > interface lte print
Flags: X - disabled, R - running

I would be ever so grateful if someone could please guide me through how to get this card working, step by step, assuming that I have done nothing but what I have shown you above.

2

I’ve also noticed that if you run /port print that the usb2 interface used by the MC7700 is flagged as inactive:

[admin@MikroTik] > /port print
Flags: I - inactive
 #    DEVICE NAME         CHANNELS        USED-BY                   BAUD-RATE
 0          serial0          1            Serial Console            auto
 1 I 1:2    usb2             5                                      9600

I noticed this after I set ignore-directip-modem to yes and tried to setup a PPP connection.

[admin@MikroTik] > /system serial-terminal usb2 channel=1
failure: port is inactive

It does this whether ignore-directip-modem is set to yes or no
Trying to set any value on the port returns an error:

[admin@MikroTik] /port> set
numbers: 1
failure: cannot change configuration for inactive ports

Same thing happens when you try to set a value on the USB port in /system resource usb:

[admin@MikroTik] /system resource usb> set
numbers: 2
error - contact MikroTik support and send a supout file (3)

How do I set it as active? I didn’t see anything in the /port set list of commands or in the System > Resources > USB popup in the GUI that would allow you to set an inactive port active. What is going on here?

3

Here’s some screenshots