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    <font size="-1"><font face="Arial">one thing i dont understand is
        what do these 2 lines actually do<br>
        <br>
      </font></font><br>
    <div>        &lt;action application="set"
      data="chk_number=${user_data(${destination_number}@${domain_name}
      var chk_ring)}" inline="true"/&gt;</div>
    <div>                &lt;action application="set"
      data="OrigDest=${destination_number}"  --- Save the original
      number<br>
      <br>
      <br>
    </div>
    <div class="moz-signature">
      <style>
body {
  font-family: Verdana, sans-serif;
  font-size: 0.8em;
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}
h1, h2, h3 { font-family: "Trebuchet MS", Verdana, sans-serif; margin:0in; margin-bottom:.0001pt; }
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hr {
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}
</style>Regards,<br>
      Bipin<br>
      <br>
      <br>
      <hr>
    </div>
    <div class="moz-cite-prefix">-------- Original Message --------<br>
      Subject: Re: [Freeswitch-users] different ringtone when called
      party is already busy on another call<br>
      From: Yehavi Bourvine <a class="moz-txt-link-rfc2396E" href="mailto:yehavi.bourvine@gmail.com">&lt;yehavi.bourvine@gmail.com&gt;</a><br>
      To: FreeSWITCH Users Help
      <a class="moz-txt-link-rfc2396E" href="mailto:freeswitch-users@lists.freeswitch.org">&lt;freeswitch-users@lists.freeswitch.org&gt;</a><br>
      Date: 12/22/2016, 8:02:39 PM<br>
    </div>
    <blockquote
cite="mid:CAAtWKeGBCfqVTrbtevp=LHLueb1i5ytF05xtRmpJEoz595wBnA@mail.gmail.com"
      type="cite">
      <div dir="rtl">
        <div dir="ltr">You can use the DB backend for that. mod_limit is
          actually doing that counting...</div>
        <div dir="ltr"><br>
        </div>
        <div dir="ltr">             __Yehavi:</div>
      </div>
      <div class="gmail_extra"><br>
        <div class="gmail_quote">
          <div dir="ltr">2016-12-22 17:58 GMT+02:00 Bipin Patel <span
              dir="ltr">&lt;<a moz-do-not-send="true"
                href="mailto:bipin@xbipin.com" target="_blank">bipin@xbipin.com</a>&gt;</span>:</div>
          <blockquote class="gmail_quote" style="margin:0
            .8ex;border-left:1px #ccc solid;border-right:1px #ccc
            solid;padding-left:1ex;padding-right:1ex">
            <div bgcolor="#FFFFFF" text="#000000"> <font size="-1"><font
                  face="Arial">hi,<br>
                  <br>
                  thanks for the reply. I forgot to mention i use blind
                  registration so i specifically dont have directory
                  entries so any other way to implement it with that,
                  meanwhile ill try to wrap my head around the dialplan
                  u provided.<br>
                  <br>
                  what i was thinking was suppose if any extension
                  places a call then increment some counter and when
                  that call ends reset it to 0 so suppose if hes in a
                  call and counter is at 1 then any new calls placed by
                  anyone else check the counter for the first ext if
                  thats called, if 1 then different ringback and if 0
                  then normal ringback<br>
                  <br>
                  <br>
                </font></font>
              <div class="m_-8441486095020094705moz-signature"> Regards,<br>
                Bipin<br>
                <br>
                <br>
                <hr> </div>
              <div class="m_-8441486095020094705moz-cite-prefix"><span
                  class="">-------- Original Message --------<br>
                  Subject: Re: [Freeswitch-users] different ringtone
                  when called party is already busy on another call<br>
                  From: Yehavi Bourvine <a moz-do-not-send="true"
                    class="m_-8441486095020094705moz-txt-link-rfc2396E"
                    href="mailto:yehavi.bourvine@gmail.com"
                    target="_blank">&lt;yehavi.bourvine@gmail.com&gt;</a><br>
                  To: FreeSWITCH Users Help <a moz-do-not-send="true"
                    class="m_-8441486095020094705moz-txt-link-rfc2396E"
                    href="mailto:freeswitch-users@lists.freeswitch.org"
                    target="_blank">&lt;freeswitch-users@lists.<wbr>freeswitch.org&gt;</a><br>
                </span>
                <div>
                  <div class="h5"> Date: 12/22/2016, 4:57:29 PM<br>
                  </div>
                </div>
              </div>
              <div>
                <div class="h5">
                  <blockquote type="cite">
                    <div dir="rtl">
                      <div dir="ltr">Hi,</div>
                      <div dir="ltr"><br>
                      </div>
                      <div dir="ltr">  To make it easier, let's call the
                        main extension A, and the secondary extension B.
                        When someone calls B and A is busy, you want the
                        "call-waiting" signal to be heard.</div>
                      <div dir="ltr"><br>
                      </div>
                      <div dir="ltr">Note: I've taken snippets from my
                        dial plan and changed them in order to readable
                        without my context; hence, they might not work
                        on first attempt.</div>
                      <div dir="ltr"><br>
                      </div>
                      <div dir="ltr">First, I've added a new parameter
                        to the B's directory entry called "chk_ring"
                        which has the value of B.</div>
                      <div dir="ltr"><br>
                      </div>
                      <div dir="ltr">First, you have to tell mod_limit
                        to track calls to/from the main extension (I am
                        doing that for all extensions) with the
                        following commands before calling the bridge
                        application:</div>
                      <div dir="ltr">      </div>
                      <div dir="ltr">
                        <div>
                          <div>     &lt;action application="limit"
                            data="hash max_calls ${dest} -1
                            HANGUP_USER_BUSY" /&gt;</div>
                        </div>
                        <div>This causes mod_limit to track the calls to
                          that extension.</div>
                        <div><br>
                        </div>
                        <div>BTW, it is adviseable to add also the
                          following setting in order to count correctly
                          when doing call transfer:</div>
                        <div>&lt;action application="set"
                          data="limit_ignore_transfer=<wbr>false" /&gt;<br>
                        </div>
                        <div><br>
                        </div>
                        <div>Next, during a new call process you have to
                          check the limit of A extension with the
                          following:</div>
                        <div><br>
                        </div>
                        <div>
                          <div>
                            <div>&lt;extension name="Intercom"
                              continue="true"&gt;</div>
                            <div>    &lt;condition break = "never" &gt;</div>
                            <div>        &lt;action application="set"
                              data="chk_number=${user_data($<wbr>{destination_number}@${domain_<wbr>name}
                              var chk_ring)}" inline="true"/&gt;</div>
                            <div>                &lt;action
                              application="set"
                              data="OrigDest=${destination_<wbr>number}"
                               --- Save the original number</div>
                            <div>                &lt;action
                              application="limit" data="hash max_calls
                              ${chk_ring} 1 ChangeRingBack" /&gt;<br>
                            </div>
                            <div>    &lt;/condition&gt;</div>
                            <div>&lt;/extension&gt;</div>
                          </div>
                        </div>
                        <div><br>
                        </div>
                        <div>And then add a ChangeRingBack extension:</div>
                        <div>
                          <div>
                            <div>&lt;extension name="ChangeRingBack"
                              continue="true"&gt;</div>
                            <div>  <span
style="background-color:rgb(249,249,249);color:rgb(0,0,0);font-family:monospace,courier;font-size:12.8px">&lt;condition
                                field="destination_number"
                                expression="^limit_exceeded$"&gt;</span></div>
                            <div><span
style="background-color:rgb(249,249,249);color:rgb(0,0,0);font-family:monospace,courier;font-size:12.8px"> 
                                  </span><font face="monospace, courier"
                                color="#000000"><span
                                  style="font-size:12.8px"> &lt;action
                                  application="set"
                                  data="ringback=${callwait-<wbr>ring}"
                                  /&gt;</span></font></div>
                            <div>  --- Do the bridge.</div>
                            <div>    &lt;/condition&gt;</div>
                            <div>&lt;/extension&gt;</div>
                          </div>
                        </div>
                        <div><br>
                        </div>
                      </div>
                    </div>
                    <div class="gmail_extra"><br>
                      <div class="gmail_quote">
                        <div dir="ltr">2016-12-22 7:54 GMT+02:00 Bipin
                          Patel <span dir="ltr">&lt;<a
                              moz-do-not-send="true"
                              href="mailto:bipin@xbipin.com"
                              target="_blank">bipin@xbipin.com</a>&gt;</span>:</div>
                        <blockquote class="gmail_quote" style="margin:0
                          .8ex;border-left:1px #ccc
                          solid;border-right:1px #ccc
                          solid;padding-left:1ex;padding-right:1ex">
                          <div bgcolor="#FFFFFF" text="#000000"> <font
                              size="-1"><font face="Arial">hi,<br>
                                <br>
                                this is exactly what im trying to
                                achieve, i want to be able to check if
                                called party is busy on another call
                                then generate a different ringback than
                                the normal one i use if not busy. Can u
                                kindly provide a dialplan example coz im
                                getting confused on how to track if the
                                ext is busy as well as increment and
                                decrement the limit value?<br>
                                <br>
                                <br>
                              </font></font>
                            <div
                              class="m_-8441486095020094705m_3242238943564535639moz-signature">
                              Regards,<br>
                              Bipin<br>
                              <br>
                              <br>
                              <hr> </div>
                            <div
                              class="m_-8441486095020094705m_3242238943564535639moz-cite-prefix"><span>--------
                                Original Message --------<br>
                                Subject: Re: [Freeswitch-users]
                                different ringtone when called party is
                                already busy on another call<br>
                              </span><span> From: Yehavi Bourvine <a
                                  moz-do-not-send="true"
                                  class="m_-8441486095020094705m_3242238943564535639moz-txt-link-rfc2396E"
href="mailto:yehavi.bourvine@gmail.com" target="_blank">&lt;yehavi.bourvine@gmail.com&gt;</a><br>
                                To: FreeSWITCH Users Help <a
                                  moz-do-not-send="true"
                                  class="m_-8441486095020094705m_3242238943564535639moz-txt-link-rfc2396E"
href="mailto:freeswitch-users@lists.freeswitch.org" target="_blank">&lt;freeswitch-users@lists.freesw<wbr>itch.org&gt;</a><br>
                              </span>
                              <div>
                                <div class="m_-8441486095020094705h5">
                                  Date: 12/22/2016, 8:59:35 AM<br>
                                </div>
                              </div>
                            </div>
                            <div>
                              <div class="m_-8441486095020094705h5">
                                <blockquote type="cite">
                                  <div dir="rtl">
                                    <div dir="ltr">What I am doing in a
                                      similar case is:</div>
                                    <div dir="ltr"><br>
                                    </div>
                                    <div dir="ltr">- I am using the
                                      mod_limit to know which extension
                                      is in a call and which is free.</div>
                                    <div dir="ltr">- If a call is made
                                      to a busy extension (which has the
                                      call waiting feature) then I play
                                      a different ring-back tone with
                                      the command:</div>
                                    <div dir="ltr">           
                                       &lt;action application="set"
                                      data="ringback=${callwait-ring<wbr>}"
                                      /&gt;</div>
                                    <div dir="ltr">- In your case, the
                                      busy extension is different than
                                      the one being called; thus, you
                                      have to add to the extension
                                      variables/parameters a new
                                      parameter which specifies the
                                      other extension number; then you
                                      have to call mod_limit for both
                                      extensions, and play the call-wait
                                      ringback if one of them is busy.</div>
                                    <div dir="ltr"><br>
                                    </div>
                                    <div dir="ltr">         Regards,
                                      __Yehavi:</div>
                                  </div>
                                  <div class="gmail_extra"><br>
                                    <div class="gmail_quote">
                                      <div dir="ltr">2016-12-21 13:59
                                        GMT+02:00 Bipin Patel <span
                                          dir="ltr">&lt;<a
                                            moz-do-not-send="true"
                                            href="mailto:bipin@xbipin.com"
                                            target="_blank">bipin@xbipin.com</a>&gt;</span>:</div>
                                      <blockquote class="gmail_quote"
                                        style="margin:0 0 0
                                        .8ex;border-left:1px #ccc
                                        solid;padding-left:1ex">
                                        <div bgcolor="#FFFFFF"
                                          text="#000000"> <font
                                            size="-1"><font face="Arial">hi,<br>
                                              <br>
                                              its a multi line phone so
                                              i guess B is accepting the
                                              call like a normal call
                                              which it should with call
                                              waiting enabled on it, if
                                              it sent busy then A would
                                              simply hear busy tone
                                              which i dont want, i want
                                              to make A hear a different
                                              ringtone while call is
                                              waiting so A can know
                                              using the tone that B is
                                              on another call and might
                                              or might not answer<br>
                                              <br>
                                              <br>
                                            </font></font>
                                          <div
class="m_-8441486095020094705m_3242238943564535639m_-1073053527446265272moz-signature">
                                            Regards,<br>
                                            Bipin<br>
                                            <br>
                                            <br>
                                            <hr> </div>
                                          <div>
                                            <div
                                              class="m_-8441486095020094705m_3242238943564535639h5">
                                              <div
class="m_-8441486095020094705m_3242238943564535639m_-1073053527446265272moz-cite-prefix">--------
                                                Original Message
                                                --------<br>
                                                Subject: Re:
                                                [Freeswitch-users]
                                                different ringtone when
                                                called party is already
                                                busy on another call<br>
                                                From: Lợi Đặng <a
                                                  moz-do-not-send="true"
class="m_-8441486095020094705m_3242238943564535639m_-1073053527446265272moz-txt-link-rfc2396E"
href="mailto:loi.dangthanh@gmail.com" target="_blank">&lt;loi.dangthanh@gmail.com&gt;</a><br>
                                                To: FreeSWITCH Users
                                                Help <a
                                                  moz-do-not-send="true"
class="m_-8441486095020094705m_3242238943564535639m_-1073053527446265272moz-txt-link-rfc2396E"
href="mailto:freeswitch-users@lists.freeswitch.org" target="_blank">&lt;freeswitch-users@lists.freesw<wbr>itch.org&gt;</a><br>
                                                Date: 12/21/2016,
                                                2:22:11 PM<br>
                                              </div>
                                              <blockquote type="cite">
                                                <div dir="ltr">
                                                  <div>
                                                    <div>
                                                      <div>
                                                        <div>guess It is
                                                          the B's
                                                          function, B is
                                                          able to put
                                                          the call in
                                                          waiting
                                                          instead of
                                                          respond 486 to
                                                          FS, when B is
                                                          already a call
                                                          with another
                                                          party.<br>
                                                        </div>
                                                        in this case,
                                                        I'm afraid FS
                                                        will have no
                                                        idea about what
                                                        is happening in
                                                        B. <br>
                                                      </div>
                                                      what branch B is?
                                                      did you try B's
                                                      role with another
                                                      phone?<br>
                                                      <br>
                                                    </div>
                                                    rgds,<br>
                                                  </div>
                                                  <div
                                                    class="gmail_extra"><br
                                                      clear="all">
                                                    <div>
                                                      <div
class="m_-8441486095020094705m_3242238943564535639m_-1073053527446265272gmail_signature"
data-smartmail="gmail_signature">
                                                        <div dir="ltr">
                                                          <div>
                                                          <div dir="ltr">
                                                          <div>
                                                          <div>Loi Dang
                                                          Thanh<br>
                                                          </div>
                                                          Phone :
                                                          +84.1224.735.448<br>
                                                          </div>
                                                          Email : <a
                                                          moz-do-not-send="true"
href="mailto:loi.dangthanh@gmail.com" target="_blank">loi.dangthanh@gmail.com</a><br>
                                                          </div>
                                                          </div>
                                                        </div>
                                                      </div>
                                                    </div>
                                                    <br>
                                                    <div
                                                      class="gmail_quote">On
                                                      Wed, Dec 21, 2016
                                                      at 3:40 PM, Bipin
                                                      Patel <span
                                                        dir="ltr">&lt;<a
moz-do-not-send="true" href="mailto:bipin@xbipin.com" target="_blank">bipin@xbipin.com</a>&gt;</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">
                                                          hi,<br>
                                                          <br>
                                                          i have been
                                                          using FS in
                                                          product on
                                                          many raspberry
                                                          pi's and other
                                                          machines in
                                                          PBX
                                                          environment
                                                          and everything
                                                          works well
                                                          except im
                                                          stuck with a
                                                          requirement
                                                          which i cant
                                                          seem to be
                                                          able to get
                                                          over.<br>
                                                          <br>
                                                          party A calls
                                                          party B but
                                                          party B is
                                                          already in
                                                          call with
                                                          party C, so
                                                          party A gets
                                                          normal
                                                          ringtone and
                                                          party B gets
                                                          call waiting
                                                          beeps, how do
                                                          we detect in
                                                          FS that party
                                                          B is already
                                                          busy on
                                                          another call
                                                          and generate a
                                                          different
                                                          ringtone for
                                                          party A which
                                                          he hears so
                                                          indirectly
                                                          party A knows
                                                          that party B
                                                          is already on
                                                          another call?<span
class="m_-8441486095020094705m_3242238943564535639m_-1073053527446265272HOEnZb"><font
color="#888888"><br>
                                                          <br>
                                                          <br>
                                                          <div
class="m_-8441486095020094705m_3242238943564535639m_-1073053527446265272m_6132622689648418768moz-signature">--
                                                          <br>
                                                          Regards,<br>
                                                          Bipin<br>
                                                          <br>
                                                          <br>
                                                          <hr> </div>
                                                          </font></span></div>
                                                        <br>
______________________________<wbr>______________________________<wbr>_____________<br>
                                                        Professional
                                                        FreeSWITCH
                                                        Consulting
                                                        Services:<br>
                                                        <a
                                                          moz-do-not-send="true"
href="mailto:consulting@freeswitch.org" target="_blank">consulting@freeswitch.org</a><br>
                                                        <a
                                                          moz-do-not-send="true"
href="http://www.freeswitchsolutions.com" rel="noreferrer"
                                                          target="_blank">http://www.freeswitchsolutions<wbr>.com</a><br>
                                                        <br>
                                                        Official
                                                        FreeSWITCH Sites<br>
                                                        <a
                                                          moz-do-not-send="true"
href="http://www.freeswitch.org" rel="noreferrer" target="_blank">http://www.freeswitch.org</a><br>
                                                        <a
                                                          moz-do-not-send="true"
href="http://confluence.freeswitch.org" rel="noreferrer" target="_blank">http://confluence.freeswitch.o<wbr>rg</a><br>
                                                        <a
                                                          moz-do-not-send="true"
href="http://www.cluecon.com" rel="noreferrer" target="_blank">http://www.cluecon.com</a><br>
                                                        <br>
                                                        FreeSWITCH-users
                                                        mailing list<br>
                                                        <a
                                                          moz-do-not-send="true"
href="mailto:FreeSWITCH-users@lists.freeswitch.org" target="_blank">FreeSWITCH-users@lists.freeswi<wbr>tch.org</a><br>
                                                        <a
                                                          moz-do-not-send="true"
href="http://lists.freeswitch.org/mailman/listinfo/freeswitch-users"
                                                          rel="noreferrer"
target="_blank">http://lists.freeswitch.org/ma<wbr>ilman/listinfo/freeswitch-user<wbr>s</a><br>
                                                        UNSUBSCRIBE:<a
                                                          moz-do-not-send="true"
href="http://lists.freeswitch.org/mailman/options/freeswitch-users"
                                                          rel="noreferrer"
target="_blank">http://lists.frees<wbr>witch.org/mailman/options/free<wbr>switch-users</a><br>
                                                        <a
                                                          moz-do-not-send="true"
href="http://www.freeswitch.org" rel="noreferrer" target="_blank">http://www.freeswitch.org</a><br>
                                                      </blockquote>
                                                    </div>
                                                    <br>
                                                  </div>
                                                </div>
                                                <br>
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                                              <br>
                                            </div>
                                          </div>
                                        </div>
                                        <br>
                                      </blockquote>
                                    </div>
                                  </div>
                                  <br>
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                                  <br>
                                </blockquote>
                                <br>
                              </div>
                            </div>
                          </div>
                          <br>
                          ______________________________<wbr>______________________________<wbr>_____________</blockquote>
                      </div>
                    </div>
                  </blockquote>
                </div>
              </div>
            </div>
          </blockquote>
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