how to send AT commands to the modem Sierra Wireless MC7710?

RouterOS Wireless Networking
1

I have RB411u ROS 5.25 and Sierra mc7710 LTE modem. The modem was connected to the LTE operator, Internet access works.
But modem doesn't accept AT commands.

[admin@TST-MT-ZA-OKNOM] > /port print
Flags: I - inactive

NAME CHANNELS USED-BY BAUD-RATE

0 serial0 1 Serial Console auto
1 usb2 1 auto
[admin@TST-MT-ZA-OKNOM] > /system resource usb print

DEVICE VENDOR NAME SPEED

0 2:1 RB400 EHCI 480 Mbps
1 2:2 Sierra Wireless, Incorporated MC7710 480 Mbps
2 1:1 RB400 OHCI 12 Mbps
[admin@TST-MT-ZA-OKNOM] > system serial-terminal port=usb2 channel=0

[Ctrl-A is the prefix key]

[Q - quit connection] [A - send Ctrl-A prefix] [R - autoconfigure rate]

trying rate 9600
timeout trying rate

[Q - quit connection] [A - send Ctrl-A prefix] [R - autoconfigure rate]

Welcome back!
[admin@TST-MT-ZA-OKNOM] >

With ROS 5.14 AT commands are sent and the modem answers, but the Internet doesn't work :slight_smile:.

2

Using newer RouterOS versions it uses LTE interface for that modem and you can’t connect using serial terminal to it. You can use Info command and also send a user-command if you want to send some AT command to the modem.
Also you can switch to oldsyle PPP mode by going into the /port firmware menu and setting the ignore-direct-ip mode to yes and reboot the router.

3

But user-command option not exist in Info command.

[admin@TST-MT-ZA-OKNOM] > interface lte info 0 

<number> -- Item number
append -- 
as-value -- 
do -- 
file -- 
interval -- 
once -- 
without-paging --

[admin@TST-MT-ZA-OKNOM] > interface lte info 0 user-command=AT!INFO
expected end of command (line 1 column 22)
[admin@TST-MT-ZA-OKNOM] >
4

Try to use such command:
/interface lte info 0 user-command=“AT”

5

[admin@TST-MT-ZA-OKNOM] > /interface lte info 0 user-command=“AT”
expected end of command (line 1 column 23)
[admin@TST-MT-ZA-OKNOM] >

6

make sure that you use the latest RouterOS version - v6.7 and try again.

7

thanks, command is executed successfully