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</o:shapelayout></xml><![endif]--></head><body lang=ES-AR link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi, guys and gals!<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-US>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></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I am implementing call encryption for a customer´s internal IP telephony infrastructure. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>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></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>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></span></p><p class=MsoNormal><span lang=EN-US>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></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I would like to know if anyone faced this possibility before, and your insight about this.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Thanks everyone in advance!<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 width=899 style='width:674.25pt'><tr style='height:34.5pt'><td valign=top style='padding:0cm 0cm 0cm 0cm;height:34.5pt'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US style='mso-fareast-language:ES-AR'> </span><span lang=EN-US style='font-size:12.0pt;mso-fareast-language:ES-AR'><o:p></o:p></span></p></td><td valign=top style='padding:0cm 0cm 0cm 0cm;height:34.5pt'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span lang=EN-US style='font-size:7.5pt;font-family:"Verdana","sans-serif";color:#FF3300;mso-fareast-language:ES-AR'>ARIEL ROZA</span></b><span lang=EN-US style='font-size:7.5pt;font-family:"Verdana","sans-serif";color:#666666;mso-fareast-language:ES-AR'><br></span><b><span lang=EN-US 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></td></tr><tr style='height:18.0pt'><td width=16 style='width:11.95pt;padding:0cm 0cm 0cm 0cm;height:18.0pt'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US style='mso-fareast-language:ES-AR'> </span><span lang=EN-US style='font-size:12.0pt;mso-fareast-language:ES-AR'><o:p></o:p></span></p></td><td width=883 style='width:662.3pt;padding:0cm 0cm 0cm 0cm;height:18.0pt'><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'>LOGICALIS</span></b><span style='font-size:7.5pt;font-family:"Verdana","sans-serif";color:#666666;mso-fareast-language:ES-AR'><br></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"><span style='color:blue'>ariel.roza@la.logicalis.com</span></a></u></span><br><u><span style='color:purple'><a href="http://www.la.logicalis.com"><span style='color:blue'>www.la.logicalis.com</span></a></span><span style='color:#FF3300'><br></span><span style='color:purple'><a href="http://www.logicalisnow.com"><span style='color:blue'>www.logicalisnow.com</span></a></span></u></span><span style='font-size:12.0pt;mso-fareast-language:ES-AR'><o:p></o:p></span></p></td></tr><tr style='height:71.25pt'><td width=16 style='width:11.95pt;padding:0cm 0cm 0cm 0cm;height:71.25pt'></td><td width=883 valign=top style='width:662.3pt;padding:0cm 0cm 0cm 0cm;height:71.25pt'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:7.5pt;font-family:"Verdana","sans-serif";color:green;mso-fareast-language:ES-AR'>Por favor, piense en el medioambiente antes de imprimir este email.</span><span style='font-size:7.5pt;font-family:"Verdana","sans-serif";color:#666666;mso-fareast-language:ES-AR'> <br></span><span style='font-size:7.5pt;font-family:"Verdana","sans-serif";color:#333333;mso-fareast-language:ES-AR'>La presente información se envía únicamente para el destinatario, y contiene información de carácter CONFIDENCIAL o PRIVLEGIADA.<br>La modificación, retransmisión, difusón, copia u otro uso de esta información por cualquier medio, por personas distintas al destinatario, están estrictamente prohibidas.</span><span style='font-size:12.0pt;mso-fareast-language:ES-AR'><o:p></o:p></span></p></td></tr></table><p class=MsoNormal><span style='mso-fareast-language:ES-AR'><o:p> </o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>