<br><br><div><span class="gmail_quote">On 11/18/05, <b class="gmail_sendername">Andrew Kohlsmith</b> <<a href="mailto:akohlsmith-asterisk@benshaw.com">akohlsmith-asterisk@benshaw.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
On Friday 18 November 2005 00:30, Eric Bishop wrote:<br>> I purchased the following item:<br>> <a href="http://www.oriontelecom.com/echo_canceller/1u_telnet/e1_1u_19inch_ec.html">http://www.oriontelecom.com/echo_canceller/1u_telnet/e1_1u_19inch_ec.html
</a><br>><br>> As you can see not a very highly spec'd product but does the job well.<br><br>Perhaps not highly specc'd but with tail lengths of 64ms bidirectional or<br>128ms unidirectional, it's already more capable than the software cancellers
<br>(16ms unidirectional with echocancel=128) and I believe that the VPM isn't<br>all that much better, but I'm not 100% sure now that I can't find the specs<br>on it.<br><br>> I don't accept the fact that mine is a special case. In fact if anything it
<br>> should be better than most other scenarios as we are using Tier 1 hardware<br>> (all HP), Digium Rev 2 firmware and our rack is about 10 metres from the<br>> CO.<br><br>None of that really matters -- it's the overall disance from your RJ48 to the
<br>far end's phone that determines the TDM delay, and delays in your<br>motherboard's PCI implementation that cause echo. By far mostly the latter.</blockquote><div><br>
Andrew, I really don't buy that. Everyone seems to blame everything
else other Digium for faulty products. Would you be as soft on the
vendor if it was Microsoft?<br>
<br>
The simple fact is they have made a fantastic PBX software product and
along with some reasonably priced PC telephony hardware. However echo
elimination is clearly lacking in all their products. If you simply
take this fact into account when planning installations, you will save
yourself a lot time and trouble.<br>
<br>
</div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">-A.<br>_______________________________________________<br>--Bandwidth and Colocation sponsored by
<a href="http://Easynews.com">Easynews.com</a> --<br><br>Asterisk-Users mailing list<br><a href="mailto:Asterisk-Users@lists.digium.com">Asterisk-Users@lists.digium.com</a><br><a href="http://lists.digium.com/mailman/listinfo/asterisk-users">
http://lists.digium.com/mailman/listinfo/asterisk-users</a><br>To UNSUBSCRIBE or update options visit:<br> <a href="http://lists.digium.com/mailman/listinfo/asterisk-users">http://lists.digium.com/mailman/listinfo/asterisk-users
</a><br></blockquote></div><br>