<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 14 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Balloon Text Char";
margin:0in;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";}
span.BalloonTextChar
{mso-style-name:"Balloon Text Char";
mso-style-priority:99;
mso-style-link:"Balloon Text";
font-family:"Tahoma","sans-serif";}
span.EmailStyle19
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:windowtext;}
span.EmailStyle20
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-US" link="blue" vlink="purple">
<div class="WordSection1">
<p class="MsoNormal"><span style="color:#1F497D">I would investigate using ‘max-conn’ on your dialpeers.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">http://www.cisco.com/en/US/docs/ios/solutions_docs/voip_solutions/CAC.html#wp902617<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:6.0pt;margin-right:0in;margin-bottom:3.0pt;margin-left:0in">
<b><span style="color:black">~Chris</span></b><span style="color:#1F497D"><o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<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>Tim Reimers<br>
<b>Sent:</b> Tuesday, October 23, 2012 1:52 PM<br>
<b>To:</b> cisco-voip@puck.nether.net<br>
<b>Subject:</b> [cisco-voip] Adding DIDs to a PRI - and how to limit total calls to those DID numbers.<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hi everyone –<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’ve been asked a question that I don’t know if I’ve heard before –<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have two existing PRI circuits, built as a single trunk group, with about 1000 DID numbers on them, used for voice calls.<o:p></o:p></p>
<p class="MsoNormal">(for sake of mentioning it, the PRIs arrive on two different routers, and all the DIDs are reachable inbound on either one)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Someone wants to add more DIDs for the purpose of faxing, with those DIDs being dedicated for fax usage, not for voice calls.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">But they want to limit the total number of calls that will be allowed to come in, so that we don’t ‘eat’ all 47 channels with attempted inbound faxes.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">How would I limit the allowable calls coming in to the DIDs 1500-1700 and 2100-2300 ?<o:p></o:p></p>
<p class="MsoNormal">(assuming 4-digit delivery from the telco)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">One factor that might do it is that the session-target device mentioned below<o:p></o:p></p>
<p class="MsoNormal">only has two active channels – <o:p></o:p></p>
<p class="MsoNormal">Would that have the effect of stopping the 3<sup>rd</sup>, 4<sup>th</sup>, etc call and sending them back to the carrier<o:p></o:p></p>
<p class="MsoNormal">with a busy signal? <o:p></o:p></p>
<p class="MsoNormal">I don’t want a re-order tone – just busy.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Or would I use the ‘max-conn’ option as shown below under the dial-peer to ensure that<o:p></o:p></p>
<p class="MsoNormal">no more calls can come in?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I think my dial peers would look like this:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">dial-peer voice 1000 voip<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">description Inbound faxes<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">destination-pattern 1[5-7]..<o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:12.0pt;color:red">max-conn 2<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="color:#1F497D">session target ipv4:192.168.200.17<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">session transport udp<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">dtmf-relay h245-signal<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">codec g711ulaw<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">fax rate 14400<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">fax protocol t38 ls-redundancy 5 hs-redundancy 2 fallback none<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">no vad<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">!<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">dial-peer voice 1000 voip<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">description Inbound faxes<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">destination-pattern 2[1-3]..<o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:12.0pt;color:red">max-conn 2<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="color:#1F497D">session target ipv4:192.168.200.17<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">session transport udp<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">dtmf-relay h245-signal<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">codec g711ulaw<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">fax rate 14400<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">fax protocol t38 ls-redundancy 5 hs-redundancy 2 fallback none<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">no vad<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">!<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</body>
</html>