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almeiras
newbie
Topic Author
Posts: 39
Joined: Fri Nov 15, 2019 9:16 pm
Location: Spain

Can't get info from BG77 (MT KNOT)

Fri Dec 02, 2022 2:02 pm

Hello, I tried to reproduce the steps here to dial my BG77 NB-IoT modem, but mine doesn't seem to work: https://youtu.be/4XQjBGMSVj4 (I have the LR8 version) Here is what I got using mine (video): https://mega.nz/file/EyI0BYbZ#p9bSm0MLJ ... toou9ypOAo

Weirdly, I can get to send AT commands using serial-terminal but not through ppp-client at-chat: for number 0 (usb2) I get "output: ERROR: reply timeout", for number 1 (modem) I get "failure: Unable to acquire port!" (instructions: https://help.mikrotik.com/docs/display/ ... T+commands)

If I try to enable number 1 (ppp-out2) I get "Couldn't change Interface <ppp-out2> - No such info channel! (8)"

Thank you very much.

Some more info:
[admin@KNOT] > /interface ppp-client print
Flags: X - disabled; R - running 
 0 X  name="ppp-out1" max-mtu=1500 max-mru=1500 mrru=disabled port=usb2 
      data-channel=0 info-channel=0 apn="internet" pin="" user="" password="" 
      profile=default phone="" dial-command="ATDT" modem-init="" 
      null-modem=no dial-on-demand=yes add-default-route=yes 
      default-route-distance=1 use-peer-dns=yes keepalive-timeout=30 
      allow=pap,chap,mschap1,mschap2 

 1 X  name="ppp-out2" max-mtu=1500 max-mru=1500 mrru=disabled port=modem 
      data-channel=2 info-channel=4 apn="internet" pin="" user="" password="" 
      profile=default phone="" dial-command="ATDT" 
      modem-init="AT+QGPSCFG="priority",1" null-modem=no dial-on-demand=yes 
      add-default-route=yes default-route-distance=1 use-peer-dns=yes 
      keepalive-timeout=30 allow=pap,chap,mschap1,mschap2 
Slight improvement changing (appears to enable):
/interface ppp-client set [find where port="modem"] info-channel=3
Default configuration must be wrong: info-channel should be 3 anda data channel fails with either 2 or 3. Channel 1 is not usable and 4 is not a data channel. The log spits a lot of errors, but "could not acquire serial port" appears on data channel 3.

Having done this change, public IP comes and goes every few seconds. Info window remains not working.

PS: info-channel=2 seems to make work the "info" button and "at-chat" until next reboot. Maybe I got a broken unit? I'll try more sims

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