<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Optus recently announced that WiFi calling is coming soon.</div><div><br></div><div>The standards-based method for making this work properly (including handoff back to cellular) uses PMIPv6.</div><div><br></div><div>John<br><br><br></div><div><br>On 14 Jul 2015, at 5:55 pm, Robert Hudson <<a href="mailto:hudrob@gmail.com">hudrob@gmail.com</a>> wrote:<br><br></div><blockquote type="cite"><div><div dir="ltr"><div class="gmail_extra"><br><div class="gmail_quote">On 14 July 2015 at 18:07, Mark Newton <span dir="ltr"><<a href="mailto:newton@atdot.dotat.org" target="_blank">newton@atdot.dotat.org</a>></span> wrote:<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word"><div><blockquote type="cite"><div><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><span class=""><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><p dir="ltr"></p></blockquote></span></div></div></div></div></blockquote></div><div>The carriers are already on board.</div></div></blockquote><div><br></div><div>In some countries, absolutely. But here in Australia, Telstra are still unable to offer IPv6 over their 3G or 4G networks (I have this on good authority as a partner who may be putting tens if not hundreds of thousands of end-points onto their networks), and my understanding is that Optus and Vodafone are in no better a position.</div></div></div></div>
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