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<p class="MsoNormal"><span style="color:#1F497D">Call me crazy.. but I am going to ask why?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><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>
Senior Engineer (Unified Communications)<br>
CDW Advanced Technology Services<br>
10610 9<sup>th</sup> Place<br>
Bellevue, WA 98004<br>
<br>
425.310.5299 Single Number Reach (WA)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">317.569.4255 Single Number Reach (IN)<br>
317.569.4201 Fax</span><span style="color:#1F497D"> <br>
<a href="mailto:dennis.heim@cdw.com"><span style="font-size:10.0pt">dennis.heim@cdw.com</span></a></span><u><span style="color:blue"><br>
</span></u><span style="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"><span style="color:#1F497D"><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>ROZA, Ariel<br>
<b>Sent:</b> Wednesday, March 28, 2012 11:40 AM<br>
<b>To:</b> cisco-voip@puck.nether.net<br>
<b>Subject:</b> [cisco-voip] Comparison between using SIP Trunk Encryption and IPSec encryption<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="ES-AR">Hi, guys and gals!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="ES-AR"><o:p> </o:p></span></p>
<p class="MsoNormal">I wanted to know the opinion of the members of the list about the best strategy for encryption of voice calls.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am implementing call encryption for a customer´s internal IP telephony infrastructure.
<o:p></o:p></p>
<p class="MsoNormal">So far I have configured encryption for IP Phones (using tokens) and Analog phones (SRTP, + IPSec between CUCM and each gateway).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Now I am planning to encrypt the calls going through a couple of SIP trunks. The trunks are between the CUCM servers and Cisco 2800 gateways)<o:p></o:p></p>
<p class="MsoNormal">A coworker of mine specialized in security suggested me implementing IPSec between the CUCM Servers and the gateways configured with SIP, instead of using the official approach (TLS with certificates). He claims that it will be simpler
to deploy (no troubles with CAs and loading certificates into CUCM) and will offer the same level of protection.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I would like to know if anyone faced this possibility before, and your insight about this.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks everyone in advance!<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:7.5pt;font-family:"Verdana","sans-serif";color:#FF3300;mso-fareast-language:ES-AR">ARIEL ROZA</span></b><span style="font-size:7.5pt;font-family:"Verdana","sans-serif";color:#666666;mso-fareast-language:ES-AR"><br>
</span><b><span style="font-size:7.5pt;font-family:"Verdana","sans-serif";color:#333333;mso-fareast-language:ES-AR">Advanced Engineering</span></b><span style="font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:ES-AR"><o:p></o:p></span></p>
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</span><span style="font-size:7.5pt;font-family:"Verdana","sans-serif";color:black;mso-fareast-language:ES-AR">Perú 327 1er Piso - C.A.B.A. - Argentina -
</span><span style="font-size:7.5pt;font-family:"Verdana","sans-serif";mso-fareast-language:ES-AR">C1067AAG<span style="color:black"><br>
Tel/Fax: +54 (11) 4344-0300<br>
<u><a href="mailto:ariel.roza@la.logicalis.com">ariel.roza@la.logicalis.com</a></u></span><br>
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