index.html

<!DOCTYPE html><html lang="en" dir="ltr"><head><meta charset="UTF-8"><meta name="generator" content="ReSpec 24.33.2"><meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
    
    <title>
      Web Telephony API
    </title>
    <style id="respec-mainstyle">/*****************************************************************
 * ReSpec 3 CSS
 * Robin Berjon - http://berjon.com/
 *****************************************************************/

@keyframes pop {
  0% {
    transform: scale(1, 1);
  }
  25% {
    transform: scale(1.25, 1.25);
    opacity: 0.75;
  }
  100% {
    transform: scale(1, 1);
  }
}

/* Override code highlighter background */
.hljs {
  background: transparent !important;
}

/* --- INLINES --- */
h1 abbr,
h2 abbr,
h3 abbr,
h4 abbr,
h5 abbr,
h6 abbr,
a abbr {
  border: none;
}

dfn {
  font-weight: bold;
}

a.internalDFN {
  color: inherit;
  border-bottom: 1px solid #99c;
  text-decoration: none;
}

a.externalDFN {
  color: inherit;
  border-bottom: 1px dotted #ccc;
  text-decoration: none;
}

a.bibref {
  text-decoration: none;
}

.respec-offending-element:target {
  animation: pop 0.25s ease-in-out 0s 1;
}

.respec-offending-element,
a[href].respec-offending-element {
  text-decoration: red wavy underline;
}
@supports not (text-decoration: red wavy underline) {
  .respec-offending-element:not(pre) {
    display: inline-block;
  }
  .respec-offending-element {
    /* Red squiggly line */
    background: url(data:image/gif;base64,R0lGODdhBAADAPEAANv///8AAP///wAAACwAAAAABAADAEACBZQjmIAFADs=)
      bottom repeat-x;
  }
}

#references :target {
  background: #eaf3ff;
  animation: pop 0.4s ease-in-out 0s 1;
}

cite .bibref {
  font-style: normal;
}

code {
  color: #c83500;
}

th code {
  color: inherit;
}

a[href].orcid {
    padding-left: 4px;
    padding-right: 4px;
}

a[href].orcid > svg {
    margin-bottom: -2px;
}

/* --- TOC --- */

.toc a,
.tof a {
  text-decoration: none;
}

a .secno,
a .figno {
  color: #000;
}

ul.tof,
ol.tof {
  list-style: none outside none;
}

.caption {
  margin-top: 0.5em;
  font-style: italic;
}

/* --- TABLE --- */

table.simple {
  border-spacing: 0;
  border-collapse: collapse;
  border-bottom: 3px solid #005a9c;
}

.simple th {
  background: #005a9c;
  color: #fff;
  padding: 3px 5px;
  text-align: left;
}

.simple th[scope="row"] {
  background: inherit;
  color: inherit;
  border-top: 1px solid #ddd;
}

.simple td {
  padding: 3px 10px;
  border-top: 1px solid #ddd;
}

.simple tr:nth-child(even) {
  background: #f0f6ff;
}

/* --- DL --- */

.section dd > p:first-child {
  margin-top: 0;
}

.section dd > p:last-child {
  margin-bottom: 0;
}

.section dd {
  margin-bottom: 1em;
}

.section dl.attrs dd,
.section dl.eldef dd {
  margin-bottom: 0;
}

#issue-summary > ul,
.respec-dfn-list {
  column-count: 2;
}

#issue-summary li,
.respec-dfn-list li {
  list-style: none;
}

details.respec-tests-details {
  margin-left: 1em;
  display: inline-block;
  vertical-align: top;
}

details.respec-tests-details > * {
  padding-right: 2em;
}

details.respec-tests-details[open] {
  z-index: 999999;
  position: absolute;
  border: thin solid #cad3e2;
  border-radius: 0.3em;
  background-color: white;
  padding-bottom: 0.5em;
}

details.respec-tests-details[open] > summary {
  border-bottom: thin solid #cad3e2;
  padding-left: 1em;
  margin-bottom: 1em;
  line-height: 2em;
}

details.respec-tests-details > ul {
  width: 100%;
  margin-top: -0.3em;
}

details.respec-tests-details > li {
  padding-left: 1em;
}

a[href].self-link:hover {
  opacity: 1;
  text-decoration: none;
  background-color: transparent;
}

h2,
h3,
h4,
h5,
h6 {
  position: relative;
}

aside.example .marker > a.self-link {
  color: inherit;
}

h2 > a.self-link,
h3 > a.self-link,
h4 > a.self-link,
h5 > a.self-link,
h6 > a.self-link {
  border: none;
  color: inherit;
  font-size: 83%;
  height: 2em;
  left: -1.6em;
  opacity: 0.5;
  position: absolute;
  text-align: center;
  text-decoration: none;
  top: 0;
  transition: opacity 0.2s;
  width: 2em;
}

h2 > a.self-link::before,
h3 > a.self-link::before,
h4 > a.self-link::before,
h5 > a.self-link::before,
h6 > a.self-link::before {
  content: "§";
  display: block;
}

@media (max-width: 767px) {
  dd {
    margin-left: 0;
  }

  /* Don't position self-link in headings off-screen */
  h2 > a.self-link,
  h3 > a.self-link,
  h4 > a.self-link,
  h5 > a.self-link,
  h6 > a.self-link {
    left: auto;
    top: auto;
  }
}

@media print {
  .removeOnSave {
    display: none;
  }
}
</style>
    
  <script id="initialUserConfig" type="application/json">{
  "specStatus": "unofficial",
  "shortName": "telephony",
  "noLegacyStyle": true,
  "publishDate": "",
  "previousPublishDate": "",
  "previousMaturity": "",
  "crEnd": "",
  "editors": [
    {
      "name": "No one"
    }
  ],
  "inlineCSS": true,
  "noIDLIn": true,
  "wg": "System Applications Working Group",
  "wgURI": "http://www.w3.org/2012/sysapps/",
  "wgPublicList": "public-sysapps",
  "wgPatentURI": "http://www.w3.org/2004/01/pp-impl/58119/status",
  "publishISODate": "2019-10-01T00:00:00.000Z",
  "generatedSubtitle": "Unofficial Draft 01 October 2019"
}</script><meta name="description" content="This specification defines an API to manage telephone calls. A typical
        use case of the Web Telephony API is the implementation of
        a 'Dialer' application supporting multiparty calls and multiple
        telephony services."><link rel="stylesheet" href="https://www.w3.org/StyleSheets/TR/2016/W3C-UD"></head>
  <body class="h-entry informative toc-inline"><div class="head">
       <h1 id="title" class="title p-name">Web Telephony API</h1>
      
      <h2>
        Unofficial Draft
        <time class="dt-published" datetime="2019-10-01">01 October 2019</time>
      </h2>
      <dl>
        
        
        
        
        
        
        
        
        <dt>Editor:</dt>
        <dd class="p-author h-card vcard"><span class="p-name fn">No one</span></dd>
        
        
        
      </dl>
      
      
      
      <p class="copyright">
            This document is licensed under a
            <a rel="license" href="https://creativecommons.org/licenses/by/4.0/" class="subfoot">Creative Commons Attribution 4.0 License</a>.
          </p>
      <hr title="Separator for header">
    </div>
    
    <section id="abstract" class="introductory"><h2>Abstract</h2>
      <p>
        This specification defines an API to manage telephone calls. A typical
        use case of the <cite>Web Telephony API</cite> is the implementation of
        a 'Dialer' application supporting multiparty calls and multiple
        telephony services.
      </p>
    </section><nav id="toc"><h2 class="introductory" id="table-of-contents">Table of Contents</h2><ol class="toc"><li class="tocline"><a class="tocxref" href="#status-of-this-document"><bdi class="secno">1. </bdi>Status of This Document</a></li></ol></nav>
    <section id="status-of-this-document">
        <h2 id="x1-status-of-this-document"><bdi class="secno">1. </bdi>Status of This Document</h2>
        <p>
          <strong>
            Work on this document has been discontinued.
          </strong>
          See <a href="https://github.com/sysapps/telephony">github repo</a> for historical information.
        </p>
      </section>
  
<p role="navigation" id="back-to-top"><a href="#title"><abbr title="Back to Top">↑</abbr></a></p><script src="https://www.w3.org/scripts/TR/2016/fixup.js"></script></body></html>