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<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0" />
<base href="https://wiki.asterisk.org/wiki" />
<title>Message Title</title>
<style type="text/css">@media only screen and (max-device-width: 480px) {.mobile-only {
width: auto !important;
height: auto !important;
overflow: visible !important;
line-height: normal !important;
font-size: inherit !important;
mso-hide: all;
}
.desktop-only {
display: none !important;
}
/* iPhone 3GS fix for unwanted 20px right margin */
body { min-width: 100% !important; padding: 0; margin: 0; }
#center-content-table { max-width: none; !important; }
#header-pattern-container { padding: 10px 10px 10px 10px !important; line-height: 20px !important; }
#header-avatar-image-container { padding-right: 8px !important; }
#email-content-container { padding: 0 !important; }
.mobile-expand { border-radius: 0 !important; border-left: 0 !important; border-right: 0 !important; padding-left: 26px !important;}
.mobile-resize-text { font-size: 16px !important; line-height: 22px !important; }
#page-title-pattern-header { font-size: 20px !important; line-height: 28px !important; }
#page-title-pattern-icon-image-container-cell { padding-top: 7px !important; }
#inline-user-pattern { display: block !important; }
#inline-user-pattern-avatar { padding-top: 3px !important; }
.contextual-area-pattern { border-bottom: 1px solid #ccc !important; padding: 15px 10px 0 10px !important;}
.users-involved-pattern-column-table { width: 100% !important; }
.users-involved-pattern-avatar-table-cell { padding: 3px 5px 5px 0 !important; }
.users-involved-pattern-column-container { padding-right: 0 !important; }
.contextual-excerpt-pattern, #users-involved-pattern { border: 0 !important; }
/** Aui Typography upsized for mobile **/
#content-excerpt-pattern-container, #contextual-excerpt-pattern-text-container { font-size: 16px !important; line-height: 22px !important; }
#content-excerpt-pattern-container h1, #contextual-excerpt-pattern-text-container h1 { font-size: 24px !important; line-height: 28px !important; }
#content-excerpt-pattern-container h2, #contextual-excerpt-pattern-text-container h2 { font-size: 20px !important; line-height: 28px !important; }
#content-excerpt-pattern-container h3, #contextual-excerpt-pattern-text-container h3 { font-size: 18px !important; line-height: 24px !important; }
#content-excerpt-pattern-container h4, #contextual-excerpt-pattern-text-container h4 { font-size: 16px !important; line-height: 22px !important; }
#content-excerpt-pattern-container h5, #contextual-excerpt-pattern-text-container h5 { font-size: 14px !important; line-height: 20px !important; }
#content-excerpt-pattern-container h6, #contextual-excerpt-pattern-text-container h6 { font-size: 14px !important; line-height: 20px !important; }
.user-mention { line-height: 18px !important; }
/** Aui Typography end **/
/* Show appropriate footer logo on mobile, display links vertically */
#footer-pattern { padding: 15px 10px !important; }
#footer-pattern-logo-desktop-container { padding: 0 !important; }
#footer-pattern-logo-desktop { width: 0 !important; height: 0 !important; }
#footer-pattern-logo-mobile {
padding-top: 10px !important;
width: 30px !important;
height: 27px !important;
display: inline !important;
}
#footer-pattern-text {
display: block !important;
}
#footer-pattern-links-container { line-height: 0 !important;}
.footer-pattern-links.mobile-resize-text,
.footer-pattern-links.mobile-resize-text,
#footer-pattern-text.mobile-resize-text,
#footer-pattern-links-container.no-footer-links {
font-size: 14px !important;
line-height: 20px !important;
}
.footer-link { display: block !important; }
#footer-pattern-links-container table { display: inline-block !important; float: none !important; }
#footer-pattern-links-container, #footer-pattern-text { text-align: center !important; }
#footer-pattern-links { padding-bottom: 5px !important; }
/** Team Calendar overrides, these should be removed when notifications are updated in Team Calendars. For now CSS
overrides are being used because the structure of the content can't change without rereleasing the plugin */
.mail-calendar-container .day-header + table tr td:first-child {
vertical-align: top !important;
padding-top: 5px !important;
}}
@media (min-width: 900px) {#center-content-table { width: 900px; }}
@media all {#outlook a {padding:0;} /* Force Outlook to provide a "view in browser" menu link. */
/* Prevent Webkit and Windows Mobile platforms from changing default font sizes.*/
body{-webkit-text-size-adjust:100%; -ms-text-size-adjust:100%;}
.ExternalClass {width:100%;} /* Force Hotmail to display emails at full width */
#background-table {margin:0; padding:0; width:100% !important; }
/* Needed to override highlighting on date and time links in iOS */
.grey a {color: #707070; text-decoration: none; }}
</style>
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<td id="header-avatar-image-container" valign="top" style="padding: 0px; border-collapse: collapse; vertical-align: top; width: 32px; padding-right: 9px"><a href="https://wiki.asterisk.org/wiki/display/~gtj?src=email" style="color: #3b73af; text-decoration: none"><img id="header-avatar-image" class="image_fix" src="cid:avatar_39cf17808903032dbfde905f46110e7f" height="32" width="32" border="0" style="border-radius: 3px; vertical-align: top" /></a></td>
<td id="header-text-container" valign="middle" style="padding: 0px; border-collapse: collapse; vertical-align: middle; font-family: Arial, sans-serif; font-size: 14px; line-height: 20px; mso-line-height-rule: exactly; mso-text-raise: 1px">George Joseph <strong>edited</strong> a page</td>
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<td class="email-content-rounded-top mobile-expand" style="padding: 0px; border-collapse: collapse; color: #fff; padding: 0 15px 0 16px; height: 15px; background-color: #fff; border-left: 1px solid #ccc; border-top: 1px solid #ccc; border-right: 1px solid #ccc; border-bottom: 0; border-top-right-radius: 5px; border-top-left-radius: 5px"> </td>
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<table id="page-title-pattern" cellspacing="0" cellpadding="0" border="0" width="100%" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333">
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<td id="page-title-pattern-icon-image-container" valign="top" style="padding: 0px; border-collapse: collapse; width: 16px; vertical-align: top">
<table cellspacing="0" cellpadding="0" border="0" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333">
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<td id="page-title-pattern-icon-image-container-cell" style="padding: 0px; border-collapse: collapse; width: 16px; padding: 9px 8px 0px 0px; mso-text-raise: 5px; mso-line-height-rule: exactly"><a href="https://wiki.asterisk.org/wiki/display/AST/Lua+Dialplan+Tips+and+Tricks?src=email" title="page icon" style="vertical-align: top;; color: #3b73af; text-decoration: none"><img style="vertical-align: top; display: block;" src="cid:page-icon" alt="page icon" title="page icon" height="16" width="16" border="0" /></a></td>
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<td style="vertical-align: top;; padding: 0px; border-collapse: collapse; padding-right: 5px; font-size: 20px; line-height: 30px; mso-line-height-rule: exactly" id="page-title-pattern-header-container"><span id="page-title-pattern-header" style="font-family: Arial, sans-serif; padding: 0; font-size: 20px; line-height: 30px; mso-text-raise: 2px; mso-line-height-rule: exactly; vertical-align: middle"><a href="https://wiki.asterisk.org/wiki/display/AST/Lua+Dialplan+Tips+and+Tricks?src=email" title="Lua Dialplan Tips and Tricks" style="color: #3b73af; text-decoration: none">Lua Dialplan Tips and Tricks</a></span></td>
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<table class="content-excerpt-pattern" cellspacing="0" cellpadding="0" border="0" width="100%" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333; font-family: Arial, sans-serif; font-size: 14px; line-height: 20px; mso-line-height-rule: exactly; mso-text-raise: 1px">
<tbody>
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<td class="content-excerpt-pattern-container mobile-resize-text " style="padding: 0px; border-collapse: collapse; padding: 0 0 0 24px"> <p class="diff-context-placeholder" style="margin: 10px 0 0 0; margin-top: 0">...</p> <p class="diff-block-context" style="margin: 10px 0 0 0">Before starting long running operations, an autoservice should be started using the <code style="font-family: monospace">autoservice_start()</code> function. An autoservice will ensure that the user hears a continuous stream of audio while your lua code works in the background. This autoservice will automatically be stopped before executing applications and dialplan functions and will be restarted afterwards. The autoservice can be stopped using autoservice_stop() and the autoservice_status() function will return <code style="font-family: monospace">true</code> if an autoservice is currently running.</p>
<table class="diff-macro diff-block-target" style="background-color: #f0f0f0;border: 1px solid #dddddd;margin: 10px 1px;padding: 0 2px 2px;width: 100%;; border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333">
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<th class="diff-macro-title" style="background-color: transparent; text-align: left; font-weight: normal;padding: 5px;"><span class="icon macro-placeholder-icon" style="background-color: ;line-height: 20px;"><img src="https://wiki.asterisk.org/wiki/s/en_GB-1988229788/4732/f543bd9a3bbc12daed85f6f5e5cba84282599932.48/_/plugins/servlet/confluence/placeholder/macro-icon?name=code" style="padding-right: 5px; vertical-align: text-bottom;" /> </span>Code Block</th>
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<td class="diff-macro-body" style="background-color: #fff;border: 1px solid #dddddd;padding: 10px;; padding: 0px; border-collapse: collapse"> <pre style="margin: 10px 0 0 0; margin-top: 0">
<span class="diff-html-removed" id="removed-diff-0" style="font-size: 100%; background-color: #ffe7e7; text-decoration: line-through;">
</span>app.startmusiconhold()
autoservice_start()
do_expensive_db_query()
autoservice_stop()
app.stopmusiconhold()
</pre> </td>
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</table> <p class="diff-context-placeholder" style="margin: 10px 0 0 0">...</p>
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<td style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;; padding: 0px; border-collapse: collapse">title</td>
<td style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;; padding: 0px; border-collapse: collapse">extensions.lua</td>
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<td class="diff-macro-body" style="background-color: #fff;border: 1px solid #dddddd;padding: 10px;; padding: 0px; border-collapse: collapse"> <pre style="margin: 10px 0 0 0; margin-top: 0">
<span class="diff-html-removed" id="removed-diff-1" style="font-size: 100%; background-color: #ffe7e7; text-decoration: line-through;">
</span>extensions = {}
extensions.default = {}
function sip_exten(e)
return function()
app.dial("SIP/" .. e)
end
end
extensions.default[100] = sip_exten(100)
extensions.default[101] = sip_exten(101)
</pre> </td>
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<td style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;; padding: 0px; border-collapse: collapse">I prefer less typing</td>
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<td class="diff-macro-body" style="background-color: #fff;border: 1px solid #dddddd;padding: 10px;; padding: 0px; border-collapse: collapse"> <pre style="margin: 10px 0 0 0; margin-top: 0">
<span class="diff-html-removed" id="removed-diff-2" style="font-size: 100%; background-color: #ffe7e7; text-decoration: line-through;">
</span>function my_exten(context, extensions)
c = channel
a = app
c.my_variable = "my new channel variable"
a.dial("SIP/100")
end
</pre> </td>
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</table> <p class="diff-context-placeholder" style="margin: 10px 0 0 0">...</p> <p class="diff-block-context" style="margin: 10px 0 0 0">Lua has a built in "print" function that outputs things to stdout, but for Asterisk, we would rather have the output go in the verbose log. To do so, we could rewrite the <code style="font-family: monospace">print</code> function as follows.</p>
<table class="diff-macro diff-block-target" style="background-color: #f0f0f0;border: 1px solid #dddddd;margin: 10px 1px;padding: 0 2px 2px;width: 100%;; border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333">
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<th class="diff-macro-title" style="background-color: transparent; text-align: left; font-weight: normal;padding: 5px;"><span class="icon macro-placeholder-icon" style="background-color: ;line-height: 20px;"><img src="https://wiki.asterisk.org/wiki/s/en_GB-1988229788/4732/f543bd9a3bbc12daed85f6f5e5cba84282599932.48/_/plugins/servlet/confluence/placeholder/macro-icon?name=code" style="padding-right: 5px; vertical-align: text-bottom;" /> </span>Code Block</th>
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<td class="diff-macro-body" style="background-color: #fff;border: 1px solid #dddddd;padding: 10px;; padding: 0px; border-collapse: collapse"> <pre style="margin: 10px 0 0 0; margin-top: 0">
<span class="diff-html-removed" id="removed-diff-3" style="font-size: 100%; background-color: #ffe7e7; text-decoration: line-through;">
</span>function print(...)
local msg = ""
for i=1,select('#', ...) do
if i == 1 then
msg = msg .. tostring(select(i, ...))
else
msg = msg .. "\t" .. tostring(select(i, ...))
end
end
app.verbose(msg)
end
</pre> </td>
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</table> <p class="diff-context-placeholder" style="margin: 10px 0 0 0">...</p> <p class="diff-block-target" style="margin: 10px 0 0 0">The <code style="font-family: monospace">require</code> method can be used to load lua modules <span class="diff-html-removed" id="removed-diff-4" style="font-size: 100%; background-color: #ffe7e7; text-decoration: line-through;">or additional files.</span><span class="diff-html-added" id="added-diff-0" style="font-size: 100%; background-color: #ddfade;">located in LUA_PATH. The </span><code style="font-family: monospace"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">dofile</span></code><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;"> method can be used to include any file by path name.</span> </p> <h2 id="LuaDialplanTipsandTricks-UsingExternalModules" class="diff-block-context" style="margin: 10px 0 0 0; font-size: 20px; font-weight: normal; line-height: 30px; margin: 40px 0 0 0">Using External Modules</h2> <p class="diff-block-context" style="margin: 10px 0 0 0">Lua modules can be loaded using the standard <code style="font-family: monospace">require</code> lua method. Some of the functionality provided by various lua modules is already included in Asterisk (e.g. func_odbc provides what LuaSQL provides). It is generally better to use code built-in to Asterisk over external lua modules. Specifically, the func_odbc module uses a connection pool to provide database resources, where as with LuaSQL each channel would have to make a new connection to the database on its own.</p> <p class="diff-context-placeholder" style="margin: 10px 0 0 0">...</p>
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<td style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;; padding: 0px; border-collapse: collapse">Assume you name your extensions.lua file extensions.lua.lua</td>
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<td class="diff-macro-body" style="background-color: #fff;border: 1px solid #dddddd;padding: 10px;; padding: 0px; border-collapse: collapse"> <pre style="margin: 10px 0 0 0; margin-top: 0">
<span class="diff-html-removed" id="removed-diff-5" style="font-size: 100%; background-color: #ffe7e7; text-decoration: line-through;">
</span>luac -o extensions.lua extensions.lua.lua
</pre> </td>
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<td class="actions-pattern-action-text-container" style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; line-height: 20px; mso-line-height-rule: exactly; mso-text-raise: 4px; padding-left: 5px; white-space: nowrap"><a href="https://wiki.asterisk.org/wiki/display/AST/Lua+Dialplan+Tips+and+Tricks?src=email" title="View page" style="color: #3b73af; text-decoration: none">View page</a></td>
<td class="actions-pattern-action-bull" style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; line-height: 20px; mso-line-height-rule: exactly; mso-text-raise: 4px; color: #999; padding: 0 5px">•</td>
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