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    <div class="moz-cite-prefix">Am 24.09.22 um 01:21 schrieb Craig
      Leres:<br>
    </div>
    <blockquote type="cite"
      cite="mid:5d2c4cd9-4d73-944d-ca28-2402e8d4061c@xse.com">More
      recently I started having issues with network registration and
      gnss reception; at least every few days both cars will transition
      from RegisteredRoaming to Searching and then back to
      RegisteredRoaming. They also transition from 12 satellites in view
      to no satellites in view and back to 12 satellites in view. For
      the cellular connection I might buy that a local cell tower is out
      of service and/or maybe my signal strength is too low. But for the
      gnss I can't see why this would happen, especially given that I
      have a satellite antenna in the garage, under the same
      tar-and-gravel roof as the cars, that I used for ntp
      synchronization (a u-blox ZED-F9T based receiver tracking four
      constellations...) and it never misses a beat. <br>
      <br>
      Not sure if I have two different issues here or if one is related
      to the "SIM7600 Registration Denied" thread. <br>
    </blockquote>
    <br>
    Those are typical symptoms when the UART communication gets messed
    up.<br>
    <br>
    I had the impression splitting the status poll wouldn't help, but I
    only tested this on my heavily affected development module.<br>
    <br>
    Maybe you'd like to give it a try on your module, patch attached.
    Please report -- if that helps, maybe we should add that before
    releasing to "main".<br>
    <br>
    Regards,<br>
    Michael<br>
    <br>
    <br>
    <div class="moz-cite-prefix">Am 09.09.22 um 21:00 schrieb Michael
      Balzer:<br>
    </div>
    <blockquote type="cite"
      cite="mid:df7a80b0-e1a6-d1ad-be02-0e0a0cda9992@expeedo.de">
      <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
      Regarding the UART frame errors:<br>
      <ol>
        <li>disabling GPS doesn't change anything</li>
        <li>splitting the status poll into two queries doesn't change
          anything</li>
        <li>issuing a UART HW FIFO reset
          (<a class="moz-txt-link-freetext"
href="https://github.com/espressif/esp-idf/commit/5404252e803f5489a72119a3ad41b580f2881a2a"
            moz-do-not-send="true">https://github.com/espressif/esp-idf/commit/5404252e803f5489a72119a3ad41b580f2881a2a</a>)
          doesn't change anything</li>
        <li>explicitly setting the mode to standard UART doesn't change
          anything<br>
        </li>
        <li>performing a deep sleep instead of a standard reboot doesn't
          change anything</li>
        <li>brute force writing a cycle of all 1's and all 0's twice to
          the full UART1 register range before driver init doesn't
          change anything<br>
        </li>
      </ol>
      <br>
      Apparently, the ESP32 UART has some kind of hardware flaw leading
      to an ESP32 reset actually not doing a full UART reset.<br>
      <br>
      <ul>
        <li><a class="moz-txt-link-freetext"
            href="https://www.esp32.com/viewtopic.php?t=4701"
            moz-do-not-send="true">https://www.esp32.com/viewtopic.php?t=4701</a></li>
        <li><a class="moz-txt-link-freetext"
href="https://github.com/espressif/esp-idf/commit/5404252e803f5489a72119a3ad41b580f2881a2a"
            moz-do-not-send="true">https://github.com/espressif/esp-idf/commit/5404252e803f5489a72119a3ad41b580f2881a2a</a></li>
        <li><a class="moz-txt-link-freetext"
href="https://github.com/espressif/esp-idf/commit/f482e9e54ce83e249e46f5ee082f6ffb61431339"
            moz-do-not-send="true">https://github.com/espressif/esp-idf/commit/f482e9e54ce83e249e46f5ee082f6ffb61431339</a></li>
        <li>…some were lucky with this patch: <a
            class="moz-txt-link-freetext"
            href="https://esp32.com/viewtopic.php?f=2&t=4725"
            moz-do-not-send="true">https://esp32.com/viewtopic.php?f=2&t=4725</a>
          …we are not.</li>
      </ul>
      <p><br>
      </p>
      <blockquote type="cite">    //Due to hardware issue, we can not
        use fifo_rst to reset uart fifo.<br>
            //See description about UART_TXFIFO_RST and UART_RXFIFO_RST
        in <<esp32_technical_reference_manual>> v2.6 or
        later.</blockquote>
      <br>
      There is apparently no method to perform a full UART HW reset, at
      least I haven't found one. It seems this is an issue we cannot fix
      (in software).<br>
      <br>
      But I now don't think this is a new issue, and this also affects
      modules quite differently, no idea depending on what
      circumstances: on the current run, my car module has lots of FIFO
      overflows & quite some MUX framing errors, but not a single
      UART frame error.<br>
      <br>
      IOW, I don't think we should let that block the release.<br>
      <br>
      Regards,<br>
      Michael<br>
      <br>
      <br>
      <div class="moz-cite-prefix">Am 09.09.22 um 14:23 schrieb Michael
        Balzer:<br>
      </div>
      <blockquote type="cite"
        cite="mid:a9d16ded-2b62-a56a-8f15-d1f5dbf133fe@expeedo.de">
        <meta http-equiv="Content-Type" content="text/html;
          charset=UTF-8">
        A related issue -- I remember wanting to ask this before: why do
        we receive all NMEA sentences three times / on three MUX
        channels?<br>
        <br>
        Apparently they come in on channels 1, 3 and 4 -- stumbled
        across this again because this now leads to these also being
        added to a cellular command response:<br>
        <br>
        <font face="monospace">OVMS# cell cmd AT+CMUX?<br>
          +CMUX: 0,0,5,118,0,0,600<br>
          OK<br>
$GPRMC,114516.00,A,xxx.139223,N,xxx.391678,E,0.0,,090922,0.9,W,A*07<br>
$GNGNS,114516.00,xxx.139223,N,xxx.391678,E,AAN,11,1.0,324.4,47.0,,,V*68</font><br>
        <br>
        <br>
        <font face="monospace">V (3388221) gsm-mux: ProcessFrame(CHAN=1,
          ADDR=05, CTRL=ff, FCS=bf, LEN=78)<br>
          D (3388231) gsm-nmea: Incoming RMC:
          $GPRMC,114516.00,A,xxx.139223,N,xxx.391678,E,0.0,,090922,0.9,W,A*07<br>
          V (3388231) gsm-mux: ProcessFrame(CHAN=3, ADDR=0d, CTRL=ff,
          FCS=fa, LEN=78)<br>
          V (3388231) gsm-mux: ProcessFrame(CHAN=4, ADDR=11, CTRL=ff,
          FCS=f7, LEN=78)<br>
          <br>
          V (3388241) gsm-mux: ProcessFrame(CHAN=1, ADDR=05, CTRL=ff,
          FCS=b1, LEN=82)<br>
          D (3388241) gsm-nmea: Incoming GNS:
          $GNGNS,114516.00,xxx.139223,N,xxx.391678,E,AAN,11,1.0,324.4,47.0,,,V*68<br>
          V (3388251) gsm-mux: ProcessFrame(CHAN=3, ADDR=0d, CTRL=ff,
          FCS=f4, LEN=82)<br>
          V (3388261) gsm-mux: ProcessFrame(CHAN=4, ADDR=11, CTRL=ff,
          FCS=f9, LEN=82)<br>
          <br>
          V (3393221) gsm-mux: ProcessFrame(CHAN=1, ADDR=05, CTRL=ff,
          FCS=bf, LEN=78)<br>
          D (3393231) gsm-nmea: Incoming RMC:
          $GPRMC,114521.00,A,xxx.139223,N,xxx.391676,E,0.0,,090922,0.9,W,A*0D<br>
          V (3393231) gsm-mux: ProcessFrame(CHAN=3, ADDR=0d, CTRL=ff,
          FCS=fa, LEN=78)<br>
          V (3393231) gsm-mux: ProcessFrame(CHAN=4, ADDR=11, CTRL=ff,
          FCS=f7, LEN=78)<br>
          <br>
          V (3393241) gsm-mux: ProcessFrame(CHAN=1, ADDR=05, CTRL=ff,
          FCS=b1, LEN=82)<br>
          D (3393241) gsm-nmea: Incoming GNS:
          $GNGNS,114521.00,xxx.139223,N,xxx.391676,E,AAN,11,1.0,324.4,47.0,,,V*62<br>
          V (3393251) gsm-mux: ProcessFrame(CHAN=3, ADDR=0d, CTRL=ff,
          FCS=f4, LEN=82)<br>
          V (3393261) gsm-mux: ProcessFrame(CHAN=4, ADDR=11, CTRL=ff,
          FCS=f9, LEN=82)<br>
          <br>
        </font><br>
        This also produces a lot of unnecessary stress on the ESP's RX
        buffer, doesn't it?<br>
        <br>
        Channel 1 is the dedicated NMEA channel, 3 is POLL and 4 is CMD.
        I don't see why channels 3 & 4 are used for these by the
        modem, but I also cannot find any command meant to configure
        this.<br>
        <br>
        Any idea on this?<br>
        <br>
        Regards,<br>
        Michael<br>
        <br>
        <br>
        <br>
        <div class="moz-cite-prefix">Am 09.09.22 um 13:14 schrieb
          Michael Balzer:<br>
        </div>
        <blockquote type="cite"
          cite="mid:8939480a-6502-acb5-a758-d6ae90c66712@expeedo.de">
          <meta http-equiv="Content-Type" content="text/html;
            charset=UTF-8">
          Mark,<br>
          <br>
          (am I the only one experiencing this?)<br>
          <br>
          I've had multiple times of temporarily frozen modem
          communication over the last days on my car module. That's new,
          so I think we should try to fix that before releasing.<br>
          <br>
          On my bench module there's a clear correlation between the
          extended status query and the frame errors. It's also not
          related to the NMEA messages, I've checked that, they come at
          another second.<br>
          <br>
          Log excerpts below.<br>
          <br>
          With frame errors responses also occasionally get corrupted,
          e.g.<br>
          <font face="monospace">D (204251) cellular: mux-rx-line #3:
            Hologram",7</font><br>
          <br>
          I think the extended status responses now very often cause an
          overflow on the RX buffer when coming in together. Solution
          could be to split the queries and distribute over 2-3 seconds.<br>
          <br>
          I don't know if that will also fix the strange cold/warm boot
          difference with this, but maybe that's simply because the
          modem is faster with getting back to the network after a
          reboot, so the status responses become large quickly.<br>
          <br>
          Regards,<br>
          Michael<br>
          <br>
          <br>
          <font face="monospace">D (204211) cellular: mux-tx #3:
            AT+CREG?;+CGREG?;+CEREG?;+CCLK?;+CSQ;+CPSI?;+COPS?<br>
            W (204251) gsm-mux: Frame error: EOF mismatch (CHAN=55,
            ADDR=df, CTRL=ff, FCS=35, LEN=133)<br>
            V (204251) gsm-mux: Frame dump: f9 df ff ff bf bf dd ff f9
            0d ff af 0d 0a 2b 43 | ..............+C<br>
            V (204251) gsm-mux: Frame dump: 50 53 49 3a 20 4c 54 45 2c
            4f 6e 6c 69 6e 65 2c | PSI: LTE,Online,<br>
            V (204251) gsm-mux: Frame dump: 32 36 32 2d 30 32 2c 30 78
            42 30 46 35 2c 31 33 | 262-02,0xB0F5,13<br>
            V (204251) gsm-mux: Frame dump: 31 37 39 34 31 32 2c 34 34
            38 2c 45 55 54 52 41 | 179412,448,EUTRA<br>
            V (204251) gsm-mux: Frame dump: 4e 2d 42 41 4e 44 31 2c 31
            30 30 2c 34 2c 34 2c | N-BAND1,100,4,4,<br>
            V (204251) gsm-mux: Frame dump: 2d 39 32 2c 2d 31 31 35 32
            2c 2d 38 37 35 2c 31 | -92,-1152,-875,1<br>
            V (204251) gsm-mux: Frame dump: 34 0d 0a 34 f9 f9 0d ff ed
            0d 0a 2b 43 52 45 47 | 4..4.......+CREG<br>
            V (204251) gsm-mux: Frame dump: 3a 20 31 2c 35 0d 0a 0d 0a
            2b 43 47 52 45 47 3a | : 1,5....+CGREG:<br>
            V (204251) gsm-mux: Frame dump: 20 31 2c 35
            0d                                  |  1,5.           <br>
            V (204251) gsm-mux: ProcessFrame(CHAN=3, ADDR=0d, CTRL=ff,
            FCS=da, LEN=25)<br>
            D (204251) cellular: mux-rx-line #3: Hologram",7<br>
            V (208231) gsm-mux: ProcessFrame(CHAN=1, ADDR=05, CTRL=ff,
            FCS=bf, LEN=78)<br>
            V (208241) gsm-mux: ProcessFrame(CHAN=3, ADDR=0d, CTRL=ff,
            FCS=fa, LEN=78)<br>
            V (208251) gsm-mux: ProcessFrame(CHAN=4, ADDR=11, CTRL=ff,
            FCS=f7, LEN=78)<br>
            V (208251) gsm-mux: ProcessFrame(CHAN=1, ADDR=05, CTRL=ff,
            FCS=b1, LEN=82)<br>
            V (208271) gsm-mux: ProcessFrame(CHAN=3, ADDR=0d, CTRL=ff,
            FCS=f4, LEN=82)<br>
            <br>
            …<br>
            <br>
            V (233271) gsm-mux: ProcessFrame(CHAN=3, ADDR=0d, CTRL=ff,
            FCS=f4, LEN=82)<br>
            V (233271) gsm-mux: ProcessFrame(CHAN=4, ADDR=11, CTRL=ff,
            FCS=f9, LEN=82)<br>
            D (234211) cellular: mux-tx #3:
            AT+CREG?;+CGREG?;+CEREG?;+CCLK?;+CSQ;+CPSI?;+COPS?<br>
            W (234211) cellular: UART frame error<br>
            W (234211) cellular: UART frame error<br>
            W (234211) cellular: UART frame error<br>
            W (234211) cellular: UART frame error<br>
            W (234231) gsm-mux: Frame error: EOF mismatch (CHAN=63,
            ADDR=ff, CTRL=ea, FCS=2c, LEN=53)<br>
            V (234231) gsm-mux: Frame dump: f9 ff ea 5f ff b7 ff fd ff
            b9 df fd bf f9 ff fd | ..._............<br>
            V (234231) gsm-mux: Frame dump: fb ff f9 f9 a9 f9 0d ff af
            0d 0a 2b 43 50 53 49 | ...........+CPSI<br>
            V (234231) gsm-mux: Frame dump: 3a 20 4c 54 45 2c 4f 6e 6c
            69 6e 65 2c 32 36 32 | : LTE,Online,262<br>
            V (234231) gsm-mux: Frame dump: 2d 30 32 2c
            30                                  | -02,0           <br>
            V (234241) gsm-mux: ProcessFrame(CHAN=3, ADDR=0d, CTRL=ff,
            FCS=a7, LEN=124)<br>
            D (234241) cellular: mux-rx-line #3: +CREG: 1,5<br>
            D (234241) cellular: mux-rx-line #3: +CGREG: 1,5<br>
            D (234241) cellular: mux-rx-line #3: +CEREG: 1,5<br>
            D (234241) cellular: mux-rx-line #3: +CCLK:
            "22/09/09,12:52:41+08"<br>
            D (234241) cellular: mux-rx-line #3: +CSQ: 13,99<br>
            V (234241) gsm-mux: ProcessFrame(CHAN=3, ADDR=0d, CTRL=ff,
            FCS=da, LEN=25)<br>
            D (234251) cellular: mux-rx-line #3: +COPS: 0,0,"vodafone.de
            Hologram",7<br>
            V (238231) gsm-mux: ProcessFrame(CHAN=1, ADDR=05, CTRL=ff,
            FCS=bf, LEN=78)<br>
            V (238241) gsm-mux: ProcessFrame(CHAN=3, ADDR=0d, CTRL=ff,
            FCS=fa, LEN=78)<br>
            <br>
            …<br>
            <br>
            V (293251) gsm-mux: ProcessFrame(CHAN=4, ADDR=11, CTRL=ff,
            FCS=f7, LEN=78)<br>
            V (293251) gsm-mux: ProcessFrame(CHAN=1, ADDR=05, CTRL=ff,
            FCS=b1, LEN=82)<br>
            V (293271) gsm-mux: ProcessFrame(CHAN=3, ADDR=0d, CTRL=ff,
            FCS=f4, LEN=82)<br>
            V (293271) gsm-mux: ProcessFrame(CHAN=4, ADDR=11, CTRL=ff,
            FCS=f9, LEN=82)<br>
            D (294211) cellular: mux-tx #3:
            AT+CREG?;+CGREG?;+CEREG?;+CCLK?;+CSQ;+CPSI?;+COPS?<br>
            W (294211) cellular: UART frame error<br>
            W (294211) cellular: UART frame error<br>
            W (294211) cellular: UART frame error<br>
            W (294241) gsm-mux: Frame error: EOF mismatch (CHAN=59,
            ADDR=ef, CTRL=db, FCS=2b, LEN=117)<br>
            V (294241) gsm-mux: Frame dump: f9 ef db df ef df f7 cb f9
            ff ff db 7f fd ff ff | ................<br>
            V (294241) gsm-mux: Frame dump: f9 0d ff af 0d 0a 2b 43 50
            53 49 3a 20 4c 54 45 | ......+CPSI: LTE<br>
            V (294241) gsm-mux: Frame dump: 2c 4f 6e 6c 69 6e 65 2c 32
            36 32 2d 30 32 2c 30 | ,Online,262-02,0<br>
            V (294241) gsm-mux: Frame dump: 78 42 30 46 35 2c 31 33 31
            37 39 34 31 32 2c 34 | xB0F5,13179412,4<br>
            V (294241) gsm-mux: Frame dump: 34 38 2c 45 55 54 52 41 4e
            2d 42 41 4e 44 31 2c | 48,EUTRAN-BAND1,<br>
            V (294241) gsm-mux: Frame dump: 31 30 30 2c 34 2c 34 2c 2d
            39 36 2c 2d 31 31 35 | 100,4,4,-96,-115<br>
            V (294241) gsm-mux: Frame dump: 35 2c 2d 38 37 33 2c 31 34
            0d 0a 34 f9 f9 0d ff | 5,-873,14..4....<br>
            V (294241) gsm-mux: Frame dump: ed 0d 0a 2b
            43                                  | ...+C           <br>
            V (294251) gsm-mux: ProcessFrame(CHAN=3, ADDR=0d, CTRL=ff,
            FCS=da, LEN=25)<br>
            D (294251) cellular: mux-rx-line #3: Hologram",7<br>
            V (298231) gsm-mux: ProcessFrame(CHAN=1, ADDR=05, CTRL=ff,
            FCS=bf, LEN=78)<br>
            V (298241) gsm-mux: ProcessFrame(CHAN=3, ADDR=0d, CTRL=ff,
            FCS=fa, LEN=78)<br>
            V (298241) gsm-mux: ProcessFrame(CHAN=4, ADDR=11, CTRL=ff,
            FCS=f7, LEN=78)<br>
            V (298251) gsm-mux: ProcessFrame(CHAN=1, ADDR=05, CTRL=ff,
            FCS=b1, LEN=82)<br>
            V (298261) gsm-mux: ProcessFrame(CHAN=3, ADDR=0d, CTRL=ff,
            FCS=f4, LEN=82)<br>
            V (298271) gsm-mux: ProcessFrame(CHAN=4, ADDR=11, CTRL=ff,
            FCS=f9, LEN=82)<br>
            <br>
            …<br>
            <br>
            V (323251) gsm-mux: ProcessFrame(CHAN=4, ADDR=11, CTRL=ff,
            FCS=f7, LEN=78)<br>
            V (323261) gsm-mux: ProcessFrame(CHAN=1, ADDR=05, CTRL=ff,
            FCS=b1, LEN=82)<br>
            V (323271) gsm-mux: ProcessFrame(CHAN=3, ADDR=0d, CTRL=ff,
            FCS=f4, LEN=82)<br>
            V (323271) gsm-mux: ProcessFrame(CHAN=4, ADDR=11, CTRL=ff,
            FCS=f9, LEN=82)<br>
            D (324211) cellular: mux-tx #3:
            AT+CREG?;+CGREG?;+CEREG?;+CCLK?;+CSQ;+CPSI?;+COPS?<br>
            W (324231) gsm-mux: Frame error: EOF mismatch (CHAN=29,
            ADDR=77, CTRL=fb, FCS=45, LEN=125)<br>
            V (324231) gsm-mux: Frame dump: f9 77 fb ef 5f ff bb ed fb
            bb db ff b7 fb cf ff | .w.._...........<br>
            V (324231) gsm-mux: Frame dump: bf d9 ff bb f9 0d ff b1 0d
            0a 2b 43 50 53 49 3a | ..........+CPSI:<br>
            V (324231) gsm-mux: Frame dump: 20 4c 54 45 2c 4f 6e 6c 69
            6e 65 2c 32 36 32 2d |  LTE,Online,262-<br>
            V (324231) gsm-mux: Frame dump: 30 32 2c 30 78 42 30 46 35
            2c 31 33 31 37 39 34 | 02,0xB0F5,131794<br>
            V (324231) gsm-mux: Frame dump: 31 32 2c 34 34 38 2c 45 55
            54 52 41 4e 2d 42 41 | 12,448,EUTRAN-BA<br>
            V (324241) gsm-mux: Frame dump: 4e 44 31 2c 31 30 30 2c 34
            2c 34 2c 2d 31 30 39 | ND1,100,4,4,-109<br>
            V (324241) gsm-mux: Frame dump: 2c 2d 31 31 36 36 2c 2d 38
            37 34 2c 31 31 0d 0a | ,-1166,-874,11..<br>
            V (324241) gsm-mux: Frame dump: c2 f9 f9 0d ff ed 0d 0a 2b
            43 52 45 47          | ........+CREG   <br>
            V (324241) gsm-mux: ProcessFrame(CHAN=3, ADDR=0d, CTRL=ff,
            FCS=da, LEN=25)<br>
            D (324241) cellular: mux-rx-line #3: Hologram",7<br>
            V (328231) gsm-mux: ProcessFrame(CHAN=1, ADDR=05, CTRL=ff,
            FCS=bf, LEN=78)<br>
            V (328241) gsm-mux: ProcessFrame(CHAN=3, ADDR=0d, CTRL=ff,
            FCS=fa, LEN=78)<br>
            V (328251) gsm-mux: ProcessFrame(CHAN=4, ADDR=11, CTRL=ff,
            FCS=f7, LEN=78)<br>
            <br>
            …<br>
            <br>
            V (353251) gsm-mux: ProcessFrame(CHAN=4, ADDR=11, CTRL=ff,
            FCS=f7, LEN=78)<br>
            V (353251) gsm-mux: ProcessFrame(CHAN=1, ADDR=05, CTRL=ff,
            FCS=b1, LEN=82)<br>
            V (353271) gsm-mux: ProcessFrame(CHAN=3, ADDR=0d, CTRL=ff,
            FCS=f4, LEN=82)<br>
            V (353271) gsm-mux: ProcessFrame(CHAN=4, ADDR=11, CTRL=ff,
            FCS=f9, LEN=82)<br>
            D (354211) cellular: mux-tx #3:
            AT+CREG?;+CGREG?;+CEREG?;+CCLK?;+CSQ;+CPSI?;+COPS?<br>
            W (354211) cellular: UART frame error<br>
            W (354211) cellular: UART frame error<br>
            W (354211) cellular: UART frame error<br>
            W (354211) cellular: UART frame error<br>
            V (354231) gsm-mux: ProcessFrame(CHAN=3, ADDR=0d, CTRL=ff,
            FCS=34, LEN=93)<br>
            D (354231) cellular: mux-rx-line #3: +CPSI:
LTE,Online,262-02,0xB0F5,13179412,448,EUTRAN-BAND1,100,4,4,-122,-1184,-874,9<br>
            V (354241) gsm-mux: ProcessFrame(CHAN=3, ADDR=0d, CTRL=ff,
            FCS=a7, LEN=124)<br>
            D (354241) cellular: mux-rx-line #3: +CREG: 1,5<br>
            D (354241) cellular: mux-rx-line #3: +CGREG: 1,5<br>
            D (354241) cellular: mux-rx-line #3: +CEREG: 1,5<br>
            D (354241) cellular: mux-rx-line #3: +CCLK:
            "22/09/09,12:54:41+08"<br>
            D (354251) cellular: mux-rx-line #3: +CSQ: 13,99<br>
            V (354251) gsm-mux: ProcessFrame(CHAN=3, ADDR=0d, CTRL=ff,
            FCS=da, LEN=25)<br>
            D (354251) cellular: mux-rx-line #3: +COPS: 0,0,"vodafone.de
            Hologram",7<br>
            V (358231) gsm-mux: ProcessFrame(CHAN=1, ADDR=05, CTRL=ff,
            FCS=bf, LEN=78)<br>
            V (358241) gsm-mux: ProcessFrame(CHAN=3, ADDR=0d, CTRL=ff,
            FCS=fa, LEN=78)<br>
            V (358251) gsm-mux: ProcessFrame(CHAN=4, ADDR=11, CTRL=ff,
            FCS=f7, LEN=78)<br>
            <br>
          </font><br>
          <br>
          <br>
          <br>
          <div class="moz-cite-prefix">Am 08.09.22 um 07:15 schrieb Mark
            Webb-Johnson:<br>
          </div>
          <blockquote type="cite"
            cite="mid:2FD58BC2-63CE-4DD6-83FA-E5404B1946BF@webb-johnson.net">
            <meta http-equiv="Content-Type" content="text/html;
              charset=UTF-8">
            Michael,
            <div class=""><br class="">
            </div>
            <div class="">I reviewed:</div>
            <div class=""><br class="">
            </div>
            <blockquote style="margin: 0 0 0 40px; border: none;
              padding: 0px;" class="">
              <div class="">$ git diff
                2b25287fbef5fa968236cb8e556ea11da7c8f579
                components/ovms_cellular components/simcom</div>
            </blockquote>
            <div class="">
              <div><br class="">
              </div>
              <div>But can’t see anything really related to frame
                errors, other than the two extra CGREG and CEREG output
                lines once every thirty seconds.</div>
              <div><br class="">
              </div>
              <div>Maybe an existing issue re-occurring?</div>
              <div><br class="">
              </div>
              <div>Do you think this should block our release of 3.3.003
                to ‘main’ release?</div>
              <div><br class="">
              </div>
              <div>Regards, Mark.</div>
              <div><br class="">
                <blockquote type="cite" class="">
                  <div class="">On 4 Sep 2022, at 4:17 PM, Michael
                    Balzer <<a href="mailto:dexter@expeedo.de"
                      class="moz-txt-link-freetext"
                      moz-do-not-send="true">dexter@expeedo.de</a>>
                    wrote:</div>
                  <br class="Apple-interchange-newline">
                  <div class="">
                    <div class="content-isolator__container">
                      <div class="protected-part">
                        <div class="protected-title">Signed PGP part</div>
                        <div class="protected-content">
                          <meta http-equiv="Content-Type"
                            content="text/html; charset=UTF-8" class="">
                          <div class=""> I'm seeing an issue with the
                            current build, but not sure if that's new
                            & related to the latest changes or just
                            coincidentally has become more severe
                            somehow:<br class="">
                            <br class="">
                            On a cold boot, modem communication is
                            mostly fine, nearly no UART frame errors,
                            and messages received by the modem are fine.<br
                              class="">
                            <br class="">
                            After the first warm reboot, initial modem
                            messages are garbled, and lots of UART frame
                            errors occur right from the beginning of
                            modem communication.<br class="">
                            <br class="">
                            This looks like some part of the serial
                            communication now doesn't get fully reset on
                            a reboot. Log attached.<br class="">
                            <br class="">
                            Regards,<br class="">
                            Michael<br class="">
                            <br class="">
                            <br class="">
                            <div class="moz-cite-prefix">Am 03.09.22 um
                              11:37 schrieb Michael Balzer:<br class="">
                            </div>
                            <blockquote type="cite"
                              cite="mid:2b006739-ebbb-267f-d858-d5941d1d555f@expeedo.de"
                              class="">
                              <meta http-equiv="Content-Type"
                                content="text/html; charset=UTF-8"
                                class="">
                              EAP release also done on <a
                                href="http://ovms.dexters-web.de"
                                class="" moz-do-not-send="true">ovms.dexters-web.de</a>.<br
                                class="">
                              <br class="">
                              Regards,<br class="">
                              Michael<br class="">
                              <br class="">
                              <br class="">
                              <div class="moz-cite-prefix">Am 01.09.22
                                um 02:53 schrieb Mark Webb-Johnson:<br
                                  class="">
                              </div>
                              <blockquote type="cite"
                                cite="mid:8E0F25CA-0E64-437E-9730-C51728905311@webb-johnson.net"
                                class="">
                                <meta http-equiv="Content-Type"
                                  content="text/html; charset=UTF-8"
                                  class="">
                                Sounds good. I think this is important
                                enough to make a formal release so I
                                will arrange that.
                                <div class=""><br class="">
                                </div>
                                <div class="">I have made a 3.3.003, and
                                  released to EAP on <a
                                    href="http://api.openvehicles.com/"
                                    class="" moz-do-not-send="true">api.openvehicles.com</a>.
                                  We can <span style="caret-color:
                                    rgb(0, 0, 0);" class="">target a
                                    main release for next week.</span></div>
                                <div class=""><br class="">
                                </div>
                                <div class="">Regards, Mark.</div>
                                <div class="">
                                  <div class=""><br class="">
                                  </div>
                                  <div class="">P.S. <span
                                      style="caret-color: rgb(0, 0, 0);"
                                      class="">I have a bunch of
                                      unrelated enhancements to CAN
                                      logging to commit, but those can
                                      wait.</span></div>
                                  <div class=""><font class=""><span
                                        style="caret-color: rgb(0, 0,
                                        0);" class=""><br class="">
                                      </span></font>
                                    <blockquote type="cite" class="">
                                      <div class="">On 31 Aug 2022, at
                                        10:27 PM, Michael Balzer <<a
href="mailto:dexter@expeedo.de" class="moz-txt-link-freetext"
                                          moz-do-not-send="true">dexter@expeedo.de</a>>
                                        wrote:</div>
                                      <br
                                        class="Apple-interchange-newline">
                                      <div class="">
                                        <div class="">
                                          <div
                                            class="content-isolator__container">
                                            <div class="protected-part">
                                              <div
                                                class="protected-title">Signed
                                                PGP part</div>
                                              <div
                                                class="protected-content">Looks
                                                good:<br class="">
                                                <br class="">
                                                Model: SIMCOM_SIM7600G<br
                                                  class="">
                                                Revision:
                                                SIM7600M21-A_V2.0<br
                                                  class="">
                                                D (80128) cellular:
                                                mux-tx #3:
AT+CREG?;+CGREG?;+CEREG?;+CCLK?;+CSQ;+CPSI?;+COPS?<br class="">
                                                D (80158) cellular:
                                                mux-rx-line #3: +CPSI:
LTE,Online,262-02,0xB0F5,12829697,303,EUTRAN-BAND20,6300,3,3,-93,-969,-701,17<br
                                                  class="">
                                                D (80168) cellular:
                                                mux-rx-line #3: +CREG:
                                                1,5<br class="">
                                                D (80168) cellular:
                                                mux-rx-line #3: +CGREG:
                                                1,5<br class="">
                                                D (80168) cellular:
                                                mux-rx-line #3: +CEREG:
                                                1,5<br class="">
                                                D (80168) cellular:
                                                mux-rx-line #3: +CCLK:
                                                "22/08/31,11:15:03+08"<br
                                                  class="">
                                                D (80168) cellular:
                                                mux-rx-line #3: +CSQ:
                                                21,99<br class="">
                                                D (80168) cellular:
                                                mux-rx-line #3: +COPS:
                                                0,0,"<a
                                                  href="http://vodafone.de/"
                                                  class=""
                                                  moz-do-not-send="true">vodafone.de</a>
                                                Hologram",7<br class="">
                                                <br class="">
                                                Model: SIMCOM_SIM5360E<br
                                                  class="">
                                                Revision: SIM5360E_V3.5<br
                                                  class="">
                                                D (74307) cellular:
                                                mux-tx #3:
AT+CREG?;+CCLK?;+CSQ;+CPSI?;+COPS?<br class="">
                                                D (74327) cellular:
                                                mux-rx-line #3: +CPSI:
                                                GSM,Online,262-02,0x011f,14822,4
                                                EGSM 900,-69,0,38-38<br
                                                  class="">
                                                D (74337) cellular:
                                                mux-rx-line #3: +CREG:
                                                1,5<br class="">
                                                D (74337) cellular:
                                                mux-rx-line #3: +CCLK:
                                                "22/08/31,11:19:47+08"<br
                                                  class="">
                                                D (74337) cellular:
                                                mux-rx-line #3: +CSQ:
                                                22,99<br class="">
                                                D (74337) cellular:
                                                mux-rx-line #3: +COPS:
                                                0,0,"<a
                                                  href="http://vodafone.de/"
                                                  class=""
                                                  moz-do-not-send="true">vodafone.de</a>
                                                Hologram",0<br class="">
                                                <br class="">
                                                Model: SIMCOM_SIM7600G<br
                                                  class="">
                                                Revision:
                                                SIM7600M21-A_V2.0.1<br
                                                  class="">
                                                D (324279) cellular:
                                                mux-tx #3:
                                                AT+CREG?;+CGREG?;+CEREG?;+CCLK?;+CSQ;+CPSI?;+COPS?<br
                                                  class="">
                                                D (324309) cellular:
                                                mux-rx-line #3: +CPSI:
LTE,Online,262-01,0x34B9,29268996,36,EUTRAN-BAND3,1444,3,3,-147,-1213,-889,8<br
                                                  class="">
                                                D (324319) cellular:
                                                mux-rx-line #3: +CREG:
                                                1,1<br class="">
                                                D (324319) cellular:
                                                mux-rx-line #3: +CGREG:
                                                1,1<br class="">
                                                D (324319) cellular:
                                                mux-rx-line #3: +CEREG:
                                                1,1<br class="">
                                                D (324319) cellular:
                                                mux-rx-line #3: +CCLK:
                                                "22/08/31,12:22:05+08"<br
                                                  class="">
                                                D (324319) cellular:
                                                mux-rx-line #3: +CSQ:
                                                11,99<br class="">
                                                D (324319) cellular:
                                                mux-rx-line #3: +COPS:
                                                0,0,"  congstar",7<br
                                                  class="">
                                                <br class="">
                                                <br class="">
                                                Regards,<br class="">
                                                Michael<br class="">
                                                <br class="">
                                                <br class="">
                                                Am 31.08.22 um 10:41
                                                schrieb Mark
                                                Webb-Johnson:<br
                                                  class="">
                                                <blockquote type="cite"
                                                  class="">I’ve made
                                                  some further
                                                  revisions. Now in
                                                  latest edge -49
                                                  release.<br class="">
                                                  <br class="">
                                                  Grateful for feedback
                                                  on this, please.
                                                  Particularly with
                                                  SIM5360 (which should
                                                  be unaffected, but …).<br
                                                    class="">
                                                  <br class="">
                                                  Regards, Mark.<br
                                                    class="">
                                                  <br class="">
                                                  <blockquote
                                                    type="cite" class="">On
                                                    26 Aug 2022, at
                                                    10:17 PM, Michael
                                                    Balzer<<a
                                                      href="mailto:dexter@expeedo.de"
class="moz-txt-link-freetext" moz-do-not-send="true">dexter@expeedo.de</a>>
                                                     wrote:<br class="">
                                                    <br class="">
                                                    Signed PGP part<br
                                                      class="">
                                                    From testing on my
                                                    three modules here
                                                    in Germany, looks
                                                    good:<br class="">
                                                    <br class="">
                                                    Model:
                                                    SIMCOM_SIM7600G<br
                                                      class="">
                                                    Revision:
                                                    SIM7600M21-A_V2.0<br
                                                      class="">
                                                    D (151128) cellular:
                                                    mux-tx #3:
                                                    AT+CREG?;+CGREG?;+CEREG?;+CCLK?;+CSQ;+CPSI?;+COPS?<br
                                                      class="">
                                                    D (151158) cellular:
                                                    mux-rx-line #3:
                                                    +CPSI:
LTE,Online,262-02,0xB0F5,13179412,448,EUTRAN-BAND1,100,4,4,-93,-1141,-864,14<br
                                                      class="">
                                                    D (151168) cellular:
                                                    mux-rx-line #3:
                                                    +CREG: 1,5<br
                                                      class="">
                                                    D (151168) cellular:
                                                    mux-rx-line #3:
                                                    +CGREG: 1,5<br
                                                      class="">
                                                    D (151168) cellular:
                                                    mux-rx-line #3:
                                                    +CEREG: 1,5<br
                                                      class="">
                                                    D (151168) cellular:
                                                    mux-rx-line #3:
                                                    +CCLK:
                                                    "22/08/26,09:13:51+08"<br
                                                      class="">
                                                    D (151168) cellular:
                                                    mux-rx-line #3:
                                                    +CSQ: 13,99<br
                                                      class="">
                                                    D (151168) cellular:
                                                    mux-rx-line #3:
                                                    +COPS: 0,0,"<a
                                                      href="http://vodafone.de/"
                                                      class=""
                                                      moz-do-not-send="true">vodafone.de</a>
                                                    Hologram",7<br
                                                      class="">
                                                    <br class="">
                                                    Model:
                                                    SIMCOM_SIM5360E<br
                                                      class="">
                                                    Revision:
                                                    SIM5360E_V3.5<br
                                                      class="">
                                                    D (143784) cellular:
                                                    mux-tx #3:
                                                    AT+CREG?;+CCLK?;+CSQ;+CPSI?;+COPS?<br
                                                      class="">
                                                    D (143804) cellular:
                                                    mux-rx-line #3:
                                                    +CPSI:
GSM,Online,262-02,0x011f,14822,4 EGSM 900,-66,0,41-41<br class="">
                                                    D (143814) cellular:
                                                    mux-rx-line #3:
                                                    +CREG: 1,5<br
                                                      class="">
                                                    D (143814) cellular:
                                                    mux-rx-line #3:
                                                    +CCLK:
                                                    "22/08/26,09:24:20+08"<br
                                                      class="">
                                                    D (143814) cellular:
                                                    mux-rx-line #3:
                                                    +CSQ: 23,99<br
                                                      class="">
                                                    D (143814) cellular:
                                                    mux-rx-line #3:
                                                    +COPS: 0,0,"<a
                                                      href="http://vodafone.de/"
                                                      class=""
                                                      moz-do-not-send="true">vodafone.de</a>
                                                    Hologram",0<br
                                                      class="">
                                                    <br class="">
                                                    Model:
                                                    SIMCOM_SIM7600G<br
                                                      class="">
                                                    Revision:
                                                    SIM7600M21-A_V2.0.1<br
                                                      class="">
                                                    D (9625359)
                                                    cellular: mux-tx #3:
AT+CREG?;+CGREG?;+CEREG?;+CCLK?;+CSQ;+CPSI?;+COPS?<br class="">
                                                    D (9625389)
                                                    cellular:
                                                    mux-rx-line #3:
                                                    +CPSI:
LTE,Online,262-01,0x34B9,29268999,268,EUTRAN-BAND8,3749,2,2,-112,-1042,-791,15<br
                                                      class="">
                                                    D (9625399)
                                                    cellular:
                                                    mux-rx-line #3:
                                                    +CREG: 1,1<br
                                                      class="">
                                                    D (9625399)
                                                    cellular:
                                                    mux-rx-line #3:
                                                    +CGREG: 1,1<br
                                                      class="">
                                                    D (9625399)
                                                    cellular:
                                                    mux-rx-line #3:
                                                    +CEREG: 1,1<br
                                                      class="">
                                                    D (9625399)
                                                    cellular:
                                                    mux-rx-line #3:
                                                    +CCLK:
                                                    "22/08/26,12:40:14+08"<br
                                                      class="">
                                                    D (9625399)
                                                    cellular:
                                                    mux-rx-line #3:
                                                    +CSQ: 15,99<br
                                                      class="">
                                                    D (9625399)
                                                    cellular:
                                                    mux-rx-line #3:
                                                    +COPS: 0,0,"
                                                     congstar",7<br
                                                      class="">
                                                    <br class="">
                                                    <br class="">
                                                    Regards,<br class="">
                                                    Michael<br class="">
                                                    <br class="">
                                                    <br class="">
                                                    Am 26.08.22 um 08:53
                                                    schrieb Mark
                                                    Webb-Johnson:<br
                                                      class="">
                                                    <blockquote
                                                      type="cite"
                                                      class="">Thanks.<br
                                                        class="">
                                                      <br class="">
                                                      I think anyone in
                                                      USA using Hologram
                                                      on T-Mobile would
                                                      benefit from this.
                                                      I just worry I
                                                      break something
                                                      else.<br class="">
                                                      <br class="">
                                                      Regards, Mark.<br
                                                        class="">
                                                      <br class="">
                                                      <blockquote
                                                        type="cite"
                                                        class="">On 26
                                                        Aug 2022, at
                                                        2:46 PM, Craig
                                                        Leres<<a
                                                          href="mailto:leres@xse.com"
class="moz-txt-link-freetext" moz-do-not-send="true">leres@xse.com</a>>
                                                         wrote:<br
                                                          class="">
                                                        <br class="">
                                                        <br class="">
                                                        On 8/25/22
                                                        23:34, Mark
                                                        Webb-Johnson
                                                        wrote:<br
                                                          class="">
                                                        <blockquote
                                                          type="cite"
                                                          class="">I’ve
                                                          been fighting
                                                          a problem for
                                                          the past few
                                                          months with
                                                          registration
                                                          getting denied
                                                          on T-Mobile in
                                                          USA using
                                                          Hologram and
                                                          our new 4G
                                                          SIM7600G
                                                          modem. Without
                                                          cellular
                                                          connectivity
                                                          at home, it
                                                          hasn’t been
                                                          easy to
                                                          recreate this,
                                                          but I found a
                                                          solution:<br
                                                          class="">
                                                        </blockquote>
                                                        I've been seeing
                                                        intermittent
                                                        netreg errors
                                                        lately; I've
                                                        booted this
                                                        version on a
                                                        couple of my
                                                        modules...<br
                                                          class="">
                                                        <br class="">
                                                        <span class="Apple-tab-span" style="white-space:pre"> </span><span class="Apple-tab-span" style="white-space:pre">    </span>Craig<br
                                                          class="">
                                                      </blockquote>
_______________________________________________<br class="">
                                                      OvmsDev mailing
                                                      list<br class="">
                                                      <a
                                                        href="mailto:OvmsDev@lists.openvehicles.com"
class="moz-txt-link-freetext" moz-do-not-send="true">OvmsDev@lists.openvehicles.com</a><br
                                                        class="">
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                                                        moz-do-not-send="true">http://lists.openvehicles.com/mailman/listinfo/ovmsdev</a><br
                                                        class="">
                                                    </blockquote>
                                                    --<br class="">
                                                    Michael Balzer *
                                                    Helkenberger Weg 9 *
                                                    D-58256 Ennepetal<br
                                                      class="">
                                                    Fon 02333 / 833 5735
                                                    * Handy 0176 / 206
                                                    989 26<br class="">
                                                    <br class="">
                                                    <br class="">
                                                    <br class="">
                                                  </blockquote>
                                                  <br class="">
_______________________________________________<br class="">
                                                  OvmsDev mailing list<br
                                                    class="">
                                                  <a
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                                                    class="">
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                                                    class="">
                                                </blockquote>
                                                <br class="">
                                                -- <br class="">
                                                Michael Balzer *
                                                Helkenberger Weg 9 *
                                                D-58256 Ennepetal<br
                                                  class="">
                                                Fon 02333 / 833 5735 *
                                                Handy 0176 / 206 989 26<br
                                                  class="">
                                                <br class="">
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                                            </div>
                                            <br class="">
                                            <iframe
                                              class="content-isolator__isolated-content"
                                              sandbox="allow-scripts"
                                              scrolling="auto"
                                              style="border:none;display:block;overflow:auto;"
data-src="data:text/html;charset=UTF-8;base64,PGlmcmFtZS1jb250ZW50IGRhdGEtaWZyYW1lLWhlaWdodD0idHJ1ZSI+X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX188QlI+T3Ztc0RldiBtYWlsaW5nIGxpc3Q8QlI+T3Ztc0RldkBsaXN0cy5vcGVudmVoaWNsZXMuY29tPEJSPmh0dHA6Ly9saXN0cy5vcGVudmVoaWNsZXMuY29tL21haWxtYW4vbGlzdGluZm8vb3Ztc2RldjxCUj48L2lmcmFtZS1jb250ZW50Pg=="
                                              width="200" height="10"></iframe></div>
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                                      </div>
                                    </blockquote>
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                                  <br class="">
                                </div>
                                <br class="">
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                                <pre class="moz-quote-pre" wrap="">_______________________________________________
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</pre>
                              </blockquote>
                              <br class="">
                              <pre class="moz-signature" cols="72">-- 
Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26</pre>
                              <br class="">
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                              <pre class="moz-quote-pre" wrap="">_______________________________________________
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</pre>
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                            <br class="">
                            <pre class="moz-signature" cols="72">-- 
Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26</pre>
                          </div>
                          <span
                            id="cid:0B507B8A-6B06-4EFA-A9DB-809432A7D035"><220904-UART-frame-errors.txt></span></div>
                      </div>
                      <br class="">
                      <iframe class="content-isolator__isolated-content"
                        sandbox="allow-scripts" scrolling="auto"
                        style="border:none;display:block;overflow:auto;"
data-src="data:text/html;charset=UTF-8;base64,PGlmcmFtZS1jb250ZW50IGRhdGEtaWZyYW1lLWhlaWdodD0idHJ1ZSI+X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX188QlI+T3Ztc0RldiBtYWlsaW5nIGxpc3Q8QlI+T3Ztc0RldkBsaXN0cy5vcGVudmVoaWNsZXMuY29tPEJSPmh0dHA6Ly9saXN0cy5vcGVudmVoaWNsZXMuY29tL21haWxtYW4vbGlzdGluZm8vb3Ztc2RldjxCUj48L2lmcmFtZS1jb250ZW50Pg=="
                        width="200" height="10"></iframe></div>
                  </div>
                </blockquote>
              </div>
              <br class="">
            </div>
            <br>
            <fieldset class="moz-mime-attachment-header"></fieldset>
            <pre class="moz-quote-pre" wrap="">_______________________________________________
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</pre>
          </blockquote>
          <br>
          <pre class="moz-signature" cols="72">-- 
Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26</pre>
          <br>
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          <pre class="moz-quote-pre" wrap="">_______________________________________________
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</pre>
        </blockquote>
        <br>
        <pre class="moz-signature" cols="72">-- 
Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26</pre>
        <br>
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</pre>
      </blockquote>
      <br>
      <pre class="moz-signature" cols="72">-- 
Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26</pre>
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      <pre class="moz-quote-pre" wrap="">_______________________________________________
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</pre>
    </blockquote>
    <br>
    <pre class="moz-signature" cols="72">-- 
Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26</pre>
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