LTE Modem: (control) Serial Port is blocked by PPP deamon



  • Hi,

    I just want to write a small script, that polls information from a 4G/LTE modem.

    If the ppp interface is down /dev/cuaU0.3 becomes available - if up unavailable.
    sure, the chat script is running…

    But I want to exec AT!GSMINFO? and AT!GSTATUS? at any point to display it on the dashboard.

    AT!GSMINFO?
    !GSMINFO:
    Serving Cell:
    PLMN:          26203
    LAC:            31516
    Cell ID:        43117
    BSIC:          0
    NCC:            0
    BSCC:          0
    RAC:            0
    Min Rx Lvl Rqd: -110
    Max Rach:      Not Available
    ARFCN:          Not Available

    Neighbour Cells:
    Band:
    ARFCN:
    RAC:
    RX level (dBm):
    C1:
    C2:
    C31:
    C32:

    OK
    AT!GSTATUS?
    !GSTATUS:
    Current Time:  16824            Temperature: 40
    Bootup Time:  8191            Mode:        ONLINE
    System mode:  WCDMA            PS state:    Attached
    WCDMA band:    WCDMA 2100
    WCDMA channel: 10786
    GMM (PS) state:REGISTERED      NORMAL SERVICE
    MM (CS) state: IDLE            NORMAL SERVICE

    WCDMA L1 State:L1M_PCH_SLEEP    LAC:        7B1C (31516)
    RRC State:    CELL_PCH        Cell ID:    013CA86D (20752493)
    RxM RSSI C0:  -75              RxD RSSI C0: -106
    RxM RSSI C1:  -106            RxD RSSI C1: -106

    Is there any chance to do this?  ???



  • Is this Sierra?
    My first idea - don't use PPP. Not sure that the drivers for other modes (qmi, mbim) are available on FreeBSD though.
    I'm currently using Sierra's EM7455 on Openwrt based router.


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