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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>IOS NFAS requires the PRIs be on same chassis with H323 which
defeats high availability. I would work with telco to issue change order to
remove the NFAS and split the PRIs between two or more 28xx/38xx. You can then
have telco use Trunk Groups for incoming and you can use Route Groups/Route
Lists for outgoing.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>NFAS was great when you had one really big refrigerator PBX with
full redundancy, but when you have distributed routers it doesn’t fit as well.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal style='margin:0in;margin-bottom:.0001pt'><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>James Buchanan<br>
<b>Sent:</b> Tuesday, July 29, 2008 2:51 PM<br>
<b>To:</b> STEVEN CASPER; cisco-voip@puck.nether.net<br>
<b>Cc:</b> RAWLE GORDON<br>
<b>Subject:</b> Re: [cisco-voip] NFAS with D Channel Back Up<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>You can use NFAS since the requirement is that you use H323. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal style='margin:0in;margin-bottom:.0001pt'><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>STEVEN CASPER<br>
<b>Sent:</b> Tuesday, July 29, 2008 1:47 PM<br>
<b>To:</b> cisco-voip@puck.nether.net<br>
<b>Cc:</b> RAWLE GORDON<br>
<b>Subject:</b> [cisco-voip] NFAS with D Channel Back Up<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal style='margin:0in;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Getting ready
to finally convert PSTN trunking from some larger Nortel PBX systems to Cisco
gateways. Up to this point we have been using PRI tie lines between the PBXs
and Cisco gateways and routing PSTN calls via the PBX. On the PBXs we are
using various PSTN PRIs using primary and backup D channels and in some cases
NFAS. Can these connectivity options be recreated in a Call Manager
6.1 environment or will I need to order new PRIs with individual D-Channels?
Can not seem to find any info on this<o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0in;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0in;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>We use a combination
or 28xx and 38xx gateways<o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0in;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0in;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Thanks!<o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0in;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Steve<o:p></o:p></span></p>
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