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Alexgrosy
Modem stopped working?

Hello!

I've been using OVMS successfully for about a month now. Everything used to work great, but now somehow my modem does not connect to the internet anymore. I've checked the SIM in another device and it is working normally.

This is the output from the log. Any ideas?

W (672062) simcom: 3 minutes since last MUX rx frame - assume MUX has failed
I (672062) gsm-ppp: Shutdown (direct)
I (672062) gsm-nmea: Shutdown (direct)
I (672062) gsm-mux: Stop MUX
I (672062) simcom: Power Cycle
I (673062) simcom: State: Enter PoweringOn state
I (673062) simcom: Power Cycle

I (674062) netmanager: Set DNS#1 0.0.0.0
I (674072) netmanager: Set DNS#2 0.0.0.0

I (680072) simcom: State: Enter PoweredOn state

I (683322) simcom: SIM card PIN code required
I (683322) simcom: Using PIN code "3373"

I (700072) simcom: State: Enter MuxStart state
I (700072) gsm-mux: Start MUX
I (700082) gsm-mux: Channel #0 is open
I (700082) gsm-mux: Channel #1 is open
I (700092) gsm-mux: Channel #2 is open
I (700102) gsm-mux: Channel #3 is open
I (700102) gsm-mux: Channel #4 is open
I (701062) simcom: State: Enter NetWait state
I (701062) gsm-nmea: Startup

This keeps repeating...


Thank you very much!
Alex Lange

OVMS# module summary
OVMS MODULE SUMMARY

Module
  Version:  3.2.015/ota_0/main (build idf v3.3.2-881-g22d636b7b Sep  2 2020 08:3                                                        2:35)
  Hardware: OVMS WIFI BLE BT cores=2 rev=ESP32/1
  12v:      0.0v

SIMCOM Modem Status
SIM card PIN code required.
  Network Registration: NotRegistered
  Provider:
  Signal: -83 dBm
  State: NetWait
    Ticker: 44
    User Data: 0
    HW FIFO overflows: 0
    Buffer overflows: 0
  Mux
    Status: up
    Open Channels: 4
    Framing Errors: 0
    Last RX frame: 36 sec(s) ago
    RX frames: 26
    TX frames: 10
  PPP: Not connected
  GPS: Connected on channel: #1
     Status: enabled
     Time: enabled

Configuration
  [auto]
    dbc: no
    egpio: no
    ext12v: no
    init: yes
    modem: yes
    obd2ecu:
    scripting: yes
    server.v2: yes
    server.v3: no
    vehicle.type: KN
    wifi.mode: apclient
    wifi.ssid.ap: OVMSKona
    wifi.ssid.client: Yu
  [can]
  [dbc]
  [egpio]
    monitor.ports:
  [http.plugin]
  [http.server]
  [locations]
  [log]
  [modem]
    apn: pinternet.interkom.de
    apn.password:
    apn.user:
    enable.gps: yes
    enable.gpstime: yes
    enable.net: yes
    enable.sms: yes
    pincode: 3373
  [module]
    cfgversion: 2020053100
    init: done
  [network]
    dns:
  [notify]
  [obd2ecu]
  [obd2ecu.map]
  [ota]
    server: ovms.dexters-web.de/firmware/ota
  [password]
    module: **redacted**
    server.v2: **redacted**
  [power]
  [pushover]
  [sdcard]
  [server.v2]
    server: ovms.dexters-web.de
    tls: yes
  [server.v3]
  [ssh.info]
    fingerprint: ARMFpemNhnfTxUn9Kt+5aRYnlI28PEpNFr8rmickEsQ
  [ssh.keys]
  [ssh.server]
    key: **redacted**
  [system.adc]
  [tpms]
  [usr]
  [vehicle]
    bms.alerts.enabled: no
    id: OVMSKona
    units.distance: K
  [wifi.ap]
    OVMSKona: **redacted**
  [wifi.ssid]
    Yu: **redacted**
  [xkn]

REPORT ENDS

Alexgrosy
Hmm, looks like this was some

Hmm, looks like this was some connection issue with the antenna. I've unplugged the modem board and checked the antenna connections, reassembled everything and it started right away again...

never mind :)

Alexgrosy
Same issue again

Same issue again crying

Looks like my GSM signal Quality has significantly degraded since the device was new. Already tried a different antenna and checked the internal connections. But I can barely get any connections.

Any suggestions?

Dolamo
stesso problema anche per me

stesso problema anche per me ed è il secondo modulo!

Dolamo
stesso problema anche per me

stesso problema anche per me ed è il secondo modulo!

markwj
markwj's picture
Try swapping the internal GPS

Try swapping the internal GPS / GSM antenna cables (so swap them on the modem board, and then swap the external antennas as well). That will tell you if there is some issue with the internal cables or their connections.

Alexgrosy
I've already tried this. It

I've already tried this. It did not help. Also checked all connections with a multimeter and they seem OK.

I guess something is wrong with the modem board...

Alexgrosy
Any suggestions?

Any suggestions?

Otherwise I will try to get a refund. It is not working for me anymore.

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