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<TITLE>Re: [Freeswitch-users] echo cancellation on PRI cards</TITLE>
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<FONT SIZE="4"><FONT FACE="Calibri, Verdana, Helvetica, Arial"><SPAN STYLE='font-size:11pt'>The cards that feature Hardware Echo Can’s work on hardware/driver level and are supported...<BR>
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<HR ALIGN=CENTER SIZE="3" WIDTH="95%"><B>From: </B>Anthony Knight <tntknight@gmail.com><BR>
<B>Reply-To: </B><freeswitch-users@lists.freeswitch.org><BR>
<B>Date: </B>Tue, 17 Mar 2009 00:55:35 -0400<BR>
<B>To: </B><freeswitch-users@lists.freeswitch.org><BR>
<B>Subject: </B>[Freeswitch-users] echo cancellation on PRI cards<BR>
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I'm thinking about doing a project that would use FreeSWITCH as an IVR, with callers being routed in by both ISDN PRI, and also SIP trunks, with occasional bridge calls between callers.<BR>
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I'm wondering in what use cases hardware echo cancellation on the PRI cards is needed. And does hardware echo cancellation work with OpenZap/FreeSWITCH? <BR>
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It looks like all the major cards (Sangoma, Digium, etc..) use Octasic Echo cancellation add-on cards. Is there any difference between brands?<BR>
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Any recommendations on PRI boards and whether I need to pay for echo cancellation are appreciated<BR>
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Thanks.<BR>
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Tony<BR>
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