That being the case, maybe a pcap of the audio might yield some clues?<br><br><div class="gmail_quote">On Wed, Apr 1, 2009 at 3:34 PM, Thorhallur Sverrisson <span dir="ltr"><<a href="mailto:thorhs@basis.is">thorhs@basis.is</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">The Polycom 650 is an IP phone, so the ground loop should not apply.<br>
Ground loops occur only in analog systems.<br>
<br>
As to what the buzzing is, I'm not sure. I have performed tests using<br>
Polycom 650s with out any sound artifacts. In fact the 650 audio has<br>
been flawless in my testing.<br>
<br>
Sorry I don't have a solution, just wanted to steer you away from a<br>
ground-loop debugging session.<br>
<font color="#888888"><br>
Thorhallur<br>
</font><div class="im"><br>
<br>
Stromin Normin wrote:<br>
> Cheers for the replies. I'm not sure if I'm replying properly but here<br>
> goes.<br>
><br>
> I'm using Polycom 650 phones.<br>
><br>
> I'm not really sure what a 60hz ground loop is so will need<br>
> clarification, sorry I'm new to this. The phones are all on the same<br>
> LAN and the conferencing is done on internal calls.<br>
><br>
> Cheers<br>
><br>
<br>
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