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    Hello!<br>
    <br>
    &nbsp;&nbsp;&nbsp; We are not using headsets and speaker phones. Only standard
    analog phones connected via Linksys or Audiocodes devices. I have
    tested LG, Nortel, Samsung, Panasonic phones with same result. The
    problem exists only _inside_ my network. So, for example:<br>
    <br>
    Audiocodes -- FreeSwitch -- Linksys&nbsp; ... echo present (often)<br>
    Linksys -- FreeSwitch -- Linksys echo present (rarely)<br>
    Audiocodes / Linksys -- Freeswitch -- Cisco 5350 -- PSTN (echo never
    present)<br>
    Audiocodes / Linksys -- FreeSwitch -- remote calling party over
    internet (echo never present)<br>
    <br>
    <br>
    <br>
    <blockquote
cite="mid:CAKbxfG83_=POna3LLYDEB2BANvMjeNH9515RjPTKnU1U5SU+aw@mail.gmail.com"
      type="cite">Headsets, speaker phones, calling a remote party over
      high latency.<br>
      <br>
      <div class="gmail_quote">On Tue, Dec 6, 2011 at 8:49 PM, Boris
        Kovalenko <span dir="ltr">&lt;<a moz-do-not-send="true"
            href="mailto:boris@tagnet.ru">boris@tagnet.ru</a>&gt;</span>
        wrote:<br>
        <blockquote class="gmail_quote" style="margin:0 0 0
          .8ex;border-left:1px #ccc solid;padding-left:1ex;">Hello!<br>
          <br>
          &nbsp; &nbsp; I have tested many phone models with same result. So my
          VOIP isn't<br>
          properly functioning? Jeff, may You tell me what should I
          double check<br>
          to eliminate echo?<br>
          <div>
            <div class="h5"><br>
              &gt; Its not possible to have echo in a pure VOIP
              (properly functioning)<br>
              &gt; implementation. The only source of echo would be from
              acoustic echo on your<br>
              &gt; phones which is most likely what you are
              experiencing. A Jitter buffer wont<br>
              &gt; help this problem.<br>
              &gt;<br>
              &gt; --<br>
              &gt; View this message in context: <a
                moz-do-not-send="true"
href="http://freeswitch-users.2379917.n2.nabble.com/Does-I-need-jitter-buffer-tp7065665p7067246.html"
                target="_blank">http://freeswitch-users.2379917.n2.nabble.com/Does-I-need-jitter-buffer-tp7065665p7067246.html</a><br>
              &gt; Sent from the freeswitch-users mailing list archive
              at Nabble.com.<br>
              &gt;<br>
              &gt;
_________________________________________________________________________<br>
              &gt; Professional FreeSWITCH Consulting Services:<br>
              &gt; <a moz-do-not-send="true"
                href="mailto:consulting@freeswitch.org">consulting@freeswitch.org</a><br>
              &gt; <a moz-do-not-send="true"
                href="http://www.freeswitchsolutions.com"
                target="_blank">http://www.freeswitchsolutions.com</a><br>
              &gt;<br>
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              &gt;<br>
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                href="http://www.freeswitch.org" target="_blank">http://www.freeswitch.org</a><br>
              &gt; <a moz-do-not-send="true"
                href="http://wiki.freeswitch.org" target="_blank">http://wiki.freeswitch.org</a><br>
              &gt; <a moz-do-not-send="true"
                href="http://www.cluecon.com" target="_blank">http://www.cluecon.com</a><br>
              &gt;<br>
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              &gt; <a moz-do-not-send="true"
                href="mailto:FreeSWITCH-users@lists.freeswitch.org">FreeSWITCH-users@lists.freeswitch.org</a><br>
              &gt; <a moz-do-not-send="true"
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              &gt; <a moz-do-not-send="true"
                href="http://www.freeswitch.org" target="_blank">http://www.freeswitch.org</a><br>
              <br>
              <br>
            </div>
          </div>
          <font color="#888888">--<br>
            Regards,<br>
            Boris<br>
          </font>
          <div>
            <div class="h5"><br>
              <br>
              <br>
_________________________________________________________________________<br>
              Professional FreeSWITCH Consulting Services:<br>
              <a moz-do-not-send="true"
                href="mailto:consulting@freeswitch.org">consulting@freeswitch.org</a><br>
              <a moz-do-not-send="true"
                href="http://www.freeswitchsolutions.com"
                target="_blank">http://www.freeswitchsolutions.com</a><br>
              <br>
              FreeSWITCH-powered IP PBX: The CudaTel Communication
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            </div>
          </div>
        </blockquote>
      </div>
      <br>
      <br clear="all">
      <div><br>
      </div>
      -- <br>
      Anthony Minessale II<br>
      <br>
      FreeSWITCH <a moz-do-not-send="true"
        href="http://www.freeswitch.org/">http://www.freeswitch.org/</a><br>
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        href="http://twitter.com/FreeSWITCH_wire">http://twitter.com/FreeSWITCH_wire</a><br>
      <br>
      AIM: anthm<br>
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      GTALK/JABBER/<a moz-do-not-send="true"
        href="mailto:PAYPAL%3Aanthony.minessale@gmail.com">PAYPAL:anthony.minessale@gmail.com</a><br>
      IRC: <a moz-do-not-send="true" href="http://irc.freenode.net">irc.freenode.net</a>
      #freeswitch<br>
      <br>
      FreeSWITCH Developer Conference<br>
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      pstn:+19193869900<br>
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      <br>
      <pre wrap="">_________________________________________________________________________
Professional FreeSWITCH Consulting Services:
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FreeSWITCH-powered IP PBX: The CudaTel Communication Server
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</pre>
    </blockquote>
    <br>
    <br>
    <pre class="moz-signature" cols="72">-- 
Regards,
Boris
&nbsp;
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