https://www.twilio.com/referral/9FGpxr

incomingvoice (basic)

<?xml version="1.0" encoding="UTF-8"?>
<Response>
<Dial answerOnBridge="true">
<Sip>2125551212@2125551212.sip.us1.twilio.com</Sip>
</Dial>
</Response>

outgoingvoice (basic)

<?xml version="1.0" encoding="UTF-8"?>
<Response>
<Dial answerOnBridge="true" callerId="{{#e164}}{{From}}{{/e164}}">{{#e164}}{{To}}{{/e164}}</Dial>
</Response>

incomingsms (web)

<Response></Response>

incomingsms (forwarding)

<?xml version="1.0" encoding="UTF-8"?>
<Response>
<Message to='+12125551212'>{{From}}: {{Body}}</Message>
</Response>

incomingsms (email forwarding)

<?php
$to = " your@email.com ";
$subject = "Text Message from {$_REQUEST['From']} to {$_REQUEST['To']}";
$message = "{$_REQUEST['Body']}";
$headers = "From: twilio@yourdomain.com";
mail($to, $subject, $message, $headers);

incominvoice (forwarding)

<?xml version="1.0" encoding="UTF-8"?>
<Response>
<Dial answerOnBridge="true" timeout="30" action="http://twimlets.com/voicemail?Email=your@emailhere.com">
<Sip>2125551212@2125551212.sip.us1.twilio.com</Sip>
</Dial>
</Response>

incomingvoice (transcribe + forwarding)
<?xml version="1.0" encoding="UTF-8"?>
<Response>
<Dial answerOnBridge="true" timeout="30" transcribe="true" 	action="http://twimlets.com/voicemail?Email=your@emailhere.com">
<Sip>2125551212@2125551212.sip.us1.twilio.com</Sip>
</Dial>
</Response>