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    <div class="moz-cite-prefix">Thanks Moises,<br>
      <br>
      I will appreciate if you can help me a little more. I have tried
      some different configurations but still no luck. <br>
      The following table shows the signalling bits, which I can
      configure from the other side:<br>
      <br>
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              <p class="MsoNormal"
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                normal">Towards Exchange<o:p></o:p></p>
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              <p class="MsoNormal"
                style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
                normal">From Exchange<o:p></o:p></p>
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              <p class="MsoNormal"
                style="margin-bottom:0in;margin-bottom:.0001pt;line-height:
                normal">Bits<span style="mso-spacerun:yes">            
                </span>abcd<o:p></o:p></p>
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              black .5pt;
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              solid black
              .5pt;mso-border-top-themecolor:text1;mso-border-left-alt:solid
              black .5pt;
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                </span>abcd<o:p></o:p></p>
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              <p class="MsoNormal"
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              <p class="MsoNormal"
                style="margin-bottom:0in;margin-bottom:.0001pt;
                text-align:center;line-height:normal" align="center">0101<o:p></o:p></p>
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            <td style="width:123.3pt;border-top:none;border-left:
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              <p class="MsoNormal"
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              <p class="MsoNormal"
                style="margin-bottom:0in;margin-bottom:.0001pt;
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            <td style="width:123.3pt;border:solid black 1.0pt;
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              <p class="MsoNormal"
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              <p class="MsoNormal"
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              <p class="MsoNormal"
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            <td style="width:123.3pt;border-top:none;border-left:
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              <p class="MsoNormal"
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      By default my Digium Te133 board sends 1001, which I can see from
      the dahdi_tool.<br>
      In the right side (From Exchange) I set ringing: 0001, because
      this is the only combination of bits when the phone rings if I
      make a call. The combinations of the bits on the left side
      (Towards Exchange) I have tried are:<br>
      1) On-hook 1010<br>
          Off-hook 0101<br>
      When I try to make a call the phone is ringing continuously and
      when I pick up the signal is busy and the CLI sends <i><b>Invalid
          CAS</b></i> error.<br>
      2) On-hook 1010<br>
          Off-hook 1001<br>
      When I try to make a call the phone is ringing continuously and
      when I pick up there is no signal and after some seconds the CLI
      sends <i><b>Seize Timeout</b></i> error.<br>
      3) On-hook 1010<br>
          Off-hook 0001<br>
      When I try to make a call the phone is ringing continuously and
      when I pick up the CLI shows: <i><b>Far end disconnected. Reason:
          Forced Release</b></i> and then <i><b>Seize Timeout Expired!</b></i><i><b><br>
        </b></i><br>
      Would you give me any clue how to proceed?<br>
      <br>
      Regards,<br>
      Petya
      <pre class="moz-signature" cols="72">Petya Minovska
Telecommunication Engineer
Balkantel Ltd
bul. Bratia Bakston, 68
Post Code 1618, Sofia
Bulgaria 
e-mail: <a class="moz-txt-link-abbreviated" href="mailto:p.minovska@balkantel.net">p.minovska@balkantel.net</a>
phone: +359 887 005 158 
</pre>
      On 2/4/2015 8:20 PM, Moises Silva wrote:<br>
    </div>
    <blockquote
cite="mid:CAA4nhyC_8gzF-Kma_yh7UiY-gPEZtMw44wS1c_K29jekE97pBA@mail.gmail.com"
      type="cite">
      <div dir="ltr">
        <div class="gmail_extra">
          <div class="gmail_quote">On Wed, Feb 4, 2015 at 3:43 AM, Petya
            Minovska <span dir="ltr"><<a moz-do-not-send="true"
                href="mailto:p.minovska@balkantel.net" target="_blank">p.minovska@balkantel.net</a>></span>
            wrote:<br>
            <blockquote class="gmail_quote" style="margin:0 0 0
              .8ex;border-left:1px #ccc solid;padding-left:1ex">
              <div bgcolor="#FFFFFF" text="#000000"> Hello,<br>
                <br>
                I have an Asterisk server and a multiplexer connected
                via E1 boards (TE133 Digium for the server and Lomif for
                the multiplexer). I have connected a phone to the FXS
                board of the multiplexer and I am trying to make a call
                to it. Through dahdi_tool I can see the rx and tx CAS
                bits and when I change them I see it.<br>
                Both rx CAS and tx CAS are in state 'idle', but when I
                try to make a call I see the following error in the CLI;<br>
                 <br>
                <i><b> == Using SIP RTP CoS mark 5</b></i><i><b><br>
                  </b></i><i><b>    -- Executing [812@demo:1]
                    Dial("SIP/101-00000015", "DAHDI/1/812,,tT") in new
                    stack</b></i><i><b><br>
                  </b></i><i><b>    -- Called DAHDI/1/812</b></i><i><b><br>
                  </b></i><i><b>[Feb  4 10:36:10] WARNING[32752]:
                    chan_dahdi.c:4185 dahdi_r2_write_log: Chan 1 - Seize
                    Timeout Expired!</b></i><i><b><br>
                  </b></i><i><b>[Feb  4 10:36:10] ERROR[32752]:
                    chan_dahdi.c:4188 dahdi_r2_write_log: Chan 1 -
                    Protocol error. Reason = Seize Timeout, R2 State =
                    Seize Transmitted, MF state = MF Engine Off, MF
                    Group = Forward MF init, CAS = 0x08</b></i><i><b><br>
                  </b></i><i><b>DNIS = 812, ANI = 101, MF = 0x20</b></i><i><b><br>
                  </b></i><i><b>[Feb  4 10:36:10] ERROR[32752]:
                    chan_dahdi.c:3973 dahdi_r2_on_protocol_error: MFC/R2
                    protocol error on chan 1: Seize Timeout</b></i><i><b><br>
                  </b></i><i><b>    -- Hungup 'DAHDI/1-1'</b></i><i><b><br>
                  </b></i><i><b>  == Everyone is busy/congested at this
                    time (1:0/0/1)</b></i><i><b><br>
                  </b></i><i><b>    -- Executing [812@demo:2]
                    NoOp("SIP/101-00000015", " DAN CHANUNAVAIL") in new
                    stack</b></i><i><b><br>
                  </b></i><i><b>    -- Executing [812@demo:3]
                    Hangup("SIP/101-00000015", "") in new stack</b></i><i><b><br>
                  </b></i><i><b>  == Spawn extension (demo, 812, 3)
                    exited non-zero on 'SIP/101-00000015'</b></i><br>
                <br>
                Would you please tell me what can help me to solve the
                problem. Is there a problem with the signalling bits,
                configured in the multiplexer or the configuration in
                the Asterisk.<br>
              </div>
            </blockquote>
            <div><br>
            </div>
            <div>This error is typically a configuration problem on the
              other end. It means we sent a CAS signal but did not
              receive any response (no bit changes on the rx) </div>
          </div>
        </div>
      </div>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <br>
    </blockquote>
    <br>
  
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