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<DIV dir=ltr align=left><FONT face=Tahoma size=2><B>From:</B>
asterisk-ss7-bounces@lists.digium.com
[mailto:asterisk-ss7-bounces@lists.digium.com] <B>On Behalf Of </B>Marcelo
Pacheco<BR><B>Sent:</B> Thursday, January 27, 2011 7:44 AM<BR><B>To:</B>
asterisk-ss7@lists.digium.com<BR><B>Subject:</B> Re: [asterisk-ss7] libSS7 and
TDMoE Possible?<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV><SPAN class=265094601-28012011><FONT face=Arial color=#0000ff
size=2> > </FONT></SPAN>TDMoE generates 1000 interrupts/second just
like any other DAHDI card.<BR><SPAN class=265094601-28012011><FONT face=Arial
color=#0000ff size=2> <FONT face="Times New Roman" color=#000000
size=3>></FONT> </FONT></SPAN>Interrupts is not the issue. 1000 irqs/sec
is doable with much older processors.<BR><SPAN class=265094601-28012011><FONT
face=Arial color=#0000ff size=2> <FONT face="Times New Roman" color=#000000
size=3>></FONT> </FONT></SPAN>What you need to worry about is echo
canceling, transcoding, and other issues.<BR><SPAN
class=265094601-28012011><FONT face=Arial color=#0000ff size=2> <FONT
face="Times New Roman" color=#000000 size=3>></FONT> </FONT></SPAN>Also,
a single TDMoE span can be used for at least 120 channels. TDMoE generates 1000
Hz interrupts per span, not per channel. And TDMoE spans using SS7 don't have
the 24 or 31 channel limitation.<BR><SPAN class=265094601-28012011><FONT
face=Arial color=#0000ff size=2> </FONT></SPAN></DIV>
<DIV><SPAN class=265094601-28012011><FONT face=Arial color=#0000ff
size=2>Slightly off the original question, but does CAS (robbed bit) signaling
do the same?</FONT></SPAN></DIV>
<DIV><SPAN class=265094601-28012011><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=265094601-28012011><FONT face=Arial color=#0000ff size=2>Our
recent tests indicated that CAS created about 7500-8000 interrupts for 15
spans CAS and one PRI. that would be 24 X 15 or 360 channels, plus a
PRI with 23 channels.</FONT></SPAN></DIV>
<DIV><SPAN class=265094601-28012011><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=265094601-28012011><FONT face=Arial color=#0000ff size=2>The
belief/specs were that the processor could handle about 12-14,000 interrupts per
second, so 15 spans were fine, but we shouldn't go too far past
that.</FONT></SPAN></DIV>
<DIV><SPAN class=265094601-28012011> </SPAN></DIV>
<DIV><SPAN class=265094601-28012011><FONT face=Arial color=#0000ff size=2>Any
comments on that?</FONT></SPAN></DIV>
<DIV><SPAN class=265094601-28012011><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=265094601-28012011><FONT face=Arial color=#0000ff
size=2>CF</FONT></SPAN></DIV></BODY></HTML>