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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">So far it has been been 711 or 729<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Dennis Heim<br>
Network Voice Engineer<br>
CDW Advanced Technology Services<br>
10610 9<sup>th</sup> Place<br>
Bellevue, WA 98004<br>
<br>
317.569.4255 Single Number Reach</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><br>
317.569.4201 Fax</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">
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<a href="mailto:dennis.heim@cdw.com"><span style="font-size:10.0pt">dennis.heim@cdw.com</span></a></span><u><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:blue"><br>
</span></u><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><a href="http://www.cdw.com/content/solutions/unified-communications/">cdw.com/content/solutions/unified-communications/</a><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> cisco-voip-bounces@puck.nether.net [mailto:cisco-voip-bounces@puck.nether.net]
<b>On Behalf Of </b>Ryan Ratliff<br>
<b>Sent:</b> Monday, September 26, 2011 1:05 PM<br>
<b>To:</b> Martin Weddle<br>
<b>Cc:</b> cisco-voip@puck.nether.net<br>
<b>Subject:</b> Re: [cisco-voip] Moving to SIP<o:p></o:p></span></p>
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<p class="MsoNormal">Does anyone see SIP vendors supporting alternative codecs like iLBC, g.722, or AAC? <o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:13.5pt;font-family:"Helvetica","sans-serif";color:black">-Ryan<o:p></o:p></span></p>
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<p class="MsoNormal">On Sep 26, 2011, at 12:28 PM, Martin Weddle wrote:<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">I’ll throw my two cents in as I’m in the process of moving to SIP. I have about 50 PRIs across the nation with an avg cost per channel of $24 and change. We are currently
negotiating our SIP MSA and rates with different vendors. We are expecting to reduce our cost per channel to just under $20 and we’ll be reducing the total number of channels by 40%. In terms of 911, we use an E911 provider and we use SIP to route those calls
as well. With regards to G.729 codec selection. I think AT&T has simply elected to only support G.729 for simplicity. Other providers do allow G.711 but I would consider G.729 as it circuits have to be sized to carry the traffic even in a DIA situation. Like
others already said, using G.729 means less transcoding. If you are going SIP DIA, acquire Cisco Cube or some other SBC solution like ACME (awesome product).</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Oh yeah, AT&T has already testified to congress that they will not be selling PRIs in 5-10 years and SIP will be the only business class phone service they will be selling.
I expect other providers to follow suit. You can google AT&Ts testimony in congress, I found it in a couple different .pdf presentations AT&T submitted to congress.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">I can’t wait to stop supporting TDM personally.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:13.5pt;font-family:"Lucida Grande","serif"">_______________________________________________<br>
cisco-voip mailing list<br>
<a href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a><br>
<a href="https://puck.nether.net/mailman/listinfo/cisco-voip">https://puck.nether.net/mailman/listinfo/cisco-voip</a><o:p></o:p></span></p>
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