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POHow to mark-up phone numbers?
 

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  1. POHow to mark-up phone numbers?
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    <p>I want to mark up a phone number as callable link in an HTML document. I have read <a href="http://microformats.org/wiki/hcard-faq#How_do_you_mark_up_a_phone_extension" rel="noreferrer">the microformats approach</a>, and I know, that the <code>tel:</code> scheme would be standard, but is quite literally nowhere implemented.</p> <p>Skype defines, as far as I know, <code>skype:</code> and <code>callto:</code>, the latter having gained some popularity. I assume, that other companies have either other schemes or jump on the <code>callto:</code> train.</p> <p>What would be a best practice to mark-up a phone number, so that as many people as possible with VoIP software can just click on a link to get a call?</p> <p>Bonus question: Does anyone know about complications with emergency numbers such as 911 in US or 110 in Germany?</p> <p>Cheers,</p> <p><strong>Update:</strong> Microsoft NetMeeting takes <code>callto:</code> schemes under WinXP. <a href="https://stackoverflow.com/questions/1009181/url-scheme-for-phone-call">This question</a> suggests, that Microsoft Office Communicator will handle <code>tel:</code> schemes but not <code>callto:</code> ones. Great, Redmond!</p> <p><strong>Update 2:</strong> Two and a half years later now. It seems to boil down to what you want to do with the number. In mobile context, <code>tel:</code> is the way to go. Targeting desktops it's up to you, if you think your users are more Skype people (<code>callto:</code>) or will more likely have something like Google Voice (<code>tel:</code>) installed. My personal opinion is, when in doubt use <code>tel:</code> (in line with @Sidnicious' answer).</p> <p><strong>Update 3:</strong> User @rybo111 noted, that Skype in Chrome has meanwhile jumped on the <code>tel:</code> bandwagon. I cannot verify this, because no machine with both at hand, but if it's true, it means we have finally a winner here:</p> <pre><code> tel: </code></pre>
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    1. COAny news about the bonus question? I was wondering about special numbers such as the (usually?) toll-free 800- in Italy.
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    2. COUnfortunately not. It seems to boil down to what your provider (VoiP, cellphone comp or whatever) does. This may as well be charging for 800 numbers.
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    3. COI'm using Google Voice in Chrome and it does not recognize `tel:` URIs. I'm stil sticking with `callto:` and a display of the phone number on the theory that the mobile phone browsers should auto-detect the number anyway.
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