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    <font face="Helvetica, Arial, sans-serif">Mark<br>
      <br>
      thank you for your input.<br>
      <br>
      I am using Asterisk 1.8.32.3 (latest).<br>
      <br>
      <br>
      I indeed use the "Private iCal url" as presented by Google in
      Calendar settings.<br>
      <br>
      <br>
      This is my calendar.conf :<br>
      <br>
      [cal0]<br>
      type = caldav<br>
      url = <a class="moz-txt-link-freetext"
href="https://calendar.google.com/calendar/ical/info%40domain.tld/private-6e3543acbc76853414124a/basic.ics">https://calendar.google.com/calendar/ical/info%40domain.tld/private-6e3543acbc76853414124a/basic.ics</a><br>
      user = <a class="moz-txt-link-abbreviated"
        href="mailto:info@domain.tld">info@domain.tld</a><br>
      secret = mysecretpasswd<br>
      refresh = 15<br>
      timeframe = 60<br>
      <br>
      [cal1]<br>
      type = ical<br>
      url = <a class="moz-txt-link-freetext"
href="https://calendar.google.com/calendar/ical/info%40domain.tld/private-6e3543acbc76853414124a/basic.ics">https://calendar.google.com/calendar/ical/info%40domain.tld/private-6e3543acbc76853414124a/basic.ics</a><br>
      user = <a class="moz-txt-link-abbreviated"
        href="mailto:info@domain.tld">info@domain.tld</a><br>
      secret = mysecretpasswd<br>
      refresh = 15<br>
      timeframe = 60<br>
      <br>
      [cal2]<br>
      type = caldav<br>
      url = <a class="moz-txt-link-freetext"
        href="https://www.google.com/calendar/dav/info@domain.tld/events/">https://www.google.com/calendar/dav/info@domain.tld/events/</a> 
      ; Main GMail calendar (the trailing slash is significant!)<br>
      user = <a class="moz-txt-link-abbreviated"
        href="mailto:info@domain.tld">info@domain.tld</a><br>
      secret = mysecretpasswd<br>
      refresh = 15<br>
      timeframe = 60<br>
      <br>
      [cal3]<br>
      type = ical<br>
      url = <a class="moz-txt-link-freetext"
        href="https://www.google.com/calendar/dav/info@domain.tld/events/">https://www.google.com/calendar/dav/info@domain.tld/events/</a> 
      ; Main GMail calendar (the trailing slash is significant!)<br>
      user = <a class="moz-txt-link-abbreviated"
        href="mailto:info@domain.tld">info@domain.tld</a><br>
      secret = mysecretpasswd<br>
      refresh = 15<br>
      timeframe = 60<br>
      <br>
      <br>
      <br>
      You see that I try every combination possible.<br>
      <br>
      <br>
      <br>
      [Oct 27 14:28:28] WARNING[26748]: res_calendar_caldav.c:118
      auth_credentials: Invalid username or password for CalDAV calendar
      'cal2'<br>
      [Oct 27 14:28:28] WARNING[26748]: res_calendar_caldav.c:157
      caldav_request: Unknown response to CalDAV calendar cal2, request
      REPORT to /calendar/dav/info@domain.tld/events/: Could not
      authenticate to server: rejected Basic challenge<br>
      [Oct 27 14:28:28] WARNING[26746]: res_calendar_icalendar.c:117
      auth_credentials: Invalid username or password for iCalendar
      'cal3'<br>
      [Oct 27 14:28:28] WARNING[26746]: res_calendar_icalendar.c:150
      fetch_icalendar: Unable to retrieve iCalendar 'cal3' from '<a
        class="moz-txt-link-freetext"
        href="https://www.google.com/calendar/dav/info@domain.tld/events/">https://www.google.com/calendar/dav/info@domain.tld/events/</a>':


      Could not authenticate to server: rejected Basic challenge<br>
      [Oct 27 14:28:28] WARNING[26746]: res_calendar_icalendar.c:477
      ical_load_calendar: Unable to parse iCalendar 'cal3'<br>
      <br>
      <br>
      <br>
      Calendar             Type       Status<br>
      --------             ----       ------<br>
      770000cal3           ical       free  <br>
      770000cal2           caldav     free  <br>
      770000cal1           ical       busy  <br>
      770000cal0           caldav     free <br>
      <br>
      <br>
      <br>
      It seems I finally have a working example !! Namely :<br>
      <br>
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    <font face="Helvetica, Arial, sans-serif"><font face="Helvetica,
        Arial, sans-serif">[cal1]<br>
        type = ical<br>
        url = <a class="moz-txt-link-freetext"
href="https://calendar.google.com/calendar/ical/info%40domain.tld/private-6e3543acbc76853414124a/basic.ics">https://calendar.google.com/calendar/ical/info%40domain.tld/private-6e3543acbc76853414124a/basic.ics</a><br>
        user = <a class="moz-txt-link-abbreviated"
          href="mailto:info@domain.tld">info@domain.tld</a><br>
        secret = mysecretpasswd<br>
        refresh = 15<br>
        timeframe = 60<br>
        <br>
        <br>
        So the "Private iCal url" of Google Calendar is the one to go !<br>
        <br>
        <br>
        <br>
        Jonas.<br>
        <br>
        <br>
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    <br>
    <br>
    <div class="moz-cite-prefix">On 27-10-15 14:04, Mark Wiater wrote:<br>
    </div>
    <blockquote cite="mid:562F7671.4070301@greybeam.com" type="cite">
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      On 10/27/2015 8:56 AM, Jonas Kellens wrote:<br>
      <blockquote cite="mid:562F7465.40107@telenet.be" type="cite">
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          I have changed this setting at Google but it brings me no
          success.<br>
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      Jonas,<br>
      <br>
      I've been using google calendar and Asterisk 1.8 for a couple of
      years now without issue.<br>
      <br>
      I have a note in my configuration that says that I'm using the
      Private ICAL URL from gmail and that it's the only one that worked
      for me. Is that the URL that you're using?<br>
      <br>
      Did you change your type to ical in calendar.conf?<br>
      <br>
      Mark<br>
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