<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Because RFC's are usually written by people that are very well versed in the field they are writing about... Granted I don't know exactly what they were smoking or drinking when they came up with SIP.<div><br></div><div>/b</div><div><br><div><div>On Jun 10, 2010, at 12:17 PM, Madovsky wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div><font size="2">why ?</font></div><blockquote style="border-left-color: rgb(0, 0, 0); border-left-width: 2px; border-left-style: solid; padding-left: 5px; padding-right: 0px; margin-left: 5px; margin-right: 0px; "><br class="Apple-interchange-newline"></blockquote></span></blockquote></div><br></div></body></html>