NB-IoT attach issue

  • Hello,

    I'm trying to attach to NB-IoT network and the outcome is:

    lte.attach()    <-- i can see on S1 interface that there are no messages
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
    OSError: modem not attached

    The outcome of CEER:

    >>> lte.send_at_cmd('AT+CEER')
    '\r\n+CEER: lastEmmCause: NO CAUSE RECEIVED, lastEsmCause: NO CAUSE RECEIVED\r\n\r\nOK\r\n'

    I have: Pytrack board + Gpy board with NB-IoT software:

    '\r\nSEQUANS Communications\r\nVZM20Q\r\nUE6.0.0.0\r\n\r\nOK\r\n'

    anybody seen this ? What can i do ?:) Sim card is inserted and AT+CIMI returns proper IMSI. Is there any generic "howto" or guide how to attach to IoT network?

    also after some time the response for every ATI command is:

    >>> lte.send_at_cmd('ATI1')

    also hello ;) my first post here


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