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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>There are three ways a provider can potentially offer a SIP
Trunk.<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>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span
style='mso-list:Ignore'>1)<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The ITSP peers with your static public IP and they do not
require any registration or authentication from you. This is the most
vulnerable for fraud unless they have some specific access control on a session
border controller.<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span
style='mso-list:Ignore'>2)<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The SIP Endpoint registers every 3600 seconds (60 seconds with
NAT traversal) with a provider so the provider learns what IP to communicate
with. No authentication is required. This is still vulnerable to fraud.<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span
style='mso-list:Ignore'>3)<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The SIP Endpoint registers <i>and</i> authenticates (MD5-Hash)
every 3600 seconds (60 seconds with NAT traversal). This is the safest method.<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>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Some providers are offering TLS but this is still relatively new
to the ITSP industry to be mainstream.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.25in'><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:#1F497D'><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>
<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";
color:windowtext'>From:</span></b><span style='font-size:10.0pt;font-family:
"Tahoma","sans-serif";color:windowtext'> cisco-voip-bounces@puck.nether.net
[mailto:cisco-voip-bounces@puck.nether.net] <b>On Behalf Of </b>Wes Sisk<br>
<b>Sent:</b> Tuesday, December 02, 2008 11:05 AM<br>
<b>To:</b> Dane Newman<br>
<b>Cc:</b> <cisco-voip@puck.nether.net><br>
<b>Subject:</b> Re: [cisco-voip] SIP trunk CUCM 7<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>A list troll kindly clarified for me:<br>
CM will do authentication on a SIP trunk if configured with the appropriate
profile. CM sends a message, receives a challange in response, and upon
matching the realm will provide authentication. However CM will not send
REGISTER message to register a SIP trunk. Most providers require
registration.<br>
<br>
HTH,<br>
Wes<br>
<br>
On Monday, December 01, 2008 5:34:03 PM, Wes Sisk <a
href="mailto:wsisk@cisco.com"><wsisk@cisco.com></a> wrote:<br>
<br>
<o:p></o:p></p>
<p class=MsoNormal>CM supports a native SIP trunk. However, that trunk does not
offer any means of providing authentication to the provider. That and the need
to focus all ip traffic through a single address (Border Element) are reasons
most people put a CUBE between CM and the SIP provider.<br>
<br>
/wes<br>
<br>
On Monday, December 01, 2008 5:30:59 PM, Dane Newman <a
href="mailto:dane.newman@gmail.com"><dane.newman@gmail.com></a> wrote:<br>
<br>
<o:p></o:p></p>
<div>
<p class=MsoNormal>Please correct me if I am wrong but I thought cucm had the
ability to support sip trunks native in 7?<br>
<br>
Sent from my iPhone<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'><br>
On Dec 1, 2008, at 2:44 PM, "Mark Holloway" <<a
href="mailto:mh@markholloway.com">mh@markholloway.com</a>> wrote:<o:p></o:p></p>
</div>
<blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'>
<div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I
haven’t had a chance to explore CUCM 7 yet, but I think you will need a back to
back user agent like CUBE or Ingate’s SIPerator.</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p>
<div style='border:none;border-top:solid windowtext 1.0pt;padding:3.0pt 0in 0in 0in;
border-color:-moz-use-text-color -moz-use-text-color'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><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"'> <a
href="mailto:cisco-voip-bounces@puck.nether.net">cisco-voip-bounces@puck.nether.net</a>
[<a href="mailto:cisco-voip-bounces@puck.nether.net">mailto:cisco-voip-bounces@puck.nether.net</a>]
<b>On Behalf Of </b>Dane Newman<br>
<b>Sent:</b> Monday, December 01, 2008 10:58 AM<br>
<b>To:</b> <a href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a><br>
<b>Subject:</b> [cisco-voip] SIP trunk CUCM 7</span><o:p></o:p></p>
</div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p>I just purchased a sip trunk from <a href="http://ipcomms.net">ipcomms.net</a>
does anyone have instructions how to configure it to work with CUCM 7?<o:p></o:p></p>
</div>
</div>
</blockquote>
<pre style='text-align:center'>
<hr size=4 width="90%" align=center>
</pre><pre><o:p> </o:p></pre><pre>_______________________________________________<o:p></o:p></pre><pre>cisco-voip mailing list<o:p></o:p></pre><pre><a
href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a><o:p></o:p></pre><pre><a
href="https://puck.nether.net/mailman/listinfo/cisco-voip">https://puck.nether.net/mailman/listinfo/cisco-voip</a><o:p></o:p></pre><pre> <o:p></o:p></pre>
<p class=MsoNormal><br>
<br>
<o:p></o:p></p>
<pre><o:p> </o:p></pre><pre style='text-align:center'>
<hr size=4 width="90%" align=center>
</pre><pre><o:p> </o:p></pre><pre>_______________________________________________<o:p></o:p></pre><pre>cisco-voip mailing list<o:p></o:p></pre><pre><a
href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a><o:p></o:p></pre><pre><a
href="https://puck.nether.net/mailman/listinfo/cisco-voip">https://puck.nether.net/mailman/listinfo/cisco-voip</a><o:p></o:p></pre><pre> <o:p></o:p></pre>
<p class=MsoNormal><o:p> </o:p></p>
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