The document discusses various communication APIs including Twilio and OpenTok that allow adding voice, video, and SMS capabilities to applications. Twilio is a web service API that enables building voice and SMS applications using existing web languages with minimal coding. OpenTok is a cloud-based API for adding video chat. Both APIs have simple JavaScript libraries. The document also provides code examples for making phone calls and handling call flows using Twilio, and for building a basic video chat application with OpenTok.

1. – Mizanur Rahman

2.  Twilio: Twilio is a web-service API that lets you
use your existing web languages and skills to
build voice and SMS applications. It enables
you to focus on building a simple, powerful,
pay-as-you-go communications platform with
very basic programming knowledge
 OpenTok: The OpenTok API is a free and
flexible cloud-based API, making it easy to add
video chat to your applications without having
to worry about infrastructure and scale—build
your app using our simple JavaScript or
ActionScript libraries.

3.  Appointment reminder
 Business lead managing
 IVR
 Phone Poll
 Online ordering notifications
 SMS Contest
 Speech to text service and vice versa
 Group video chat
 Private (One to one) chat session
 Talk show
 Conferences and many more……

4.  Voice & SMS service with ease of use
 No hardware hassle
 Pay as you go – no up front cost
 Build on the Amazon cloud
 Options to call forwarding, recording,
conferences, send & receive SMS
 Call all over the world
 Voice option for Male & Female voice

5.  Very simple registration process.
 A sandbox credit of $30 to test out your
application with real calls and SMS
 A well documented REST API library with
examples and active community of more
than 60,000 developers
 Can build and run your first application with
few lines of codes.

6.  A User calls or sends an SMS to your Twilio
phone number
 Twilio receives the call or SMS and makes a
request to your application
 Your app receives that information and sends
XML back to Twilio
 Twilio executes those instructions and interacts
with the user

8. Primary Verbs
 <Say> some text
 <Play> an audio file
 <Gather> input from the caller
 <Record> the caller's audio
 <Dial> another phone number
 <Sms> send a text
Secondary Verbs
 <Hangup>end a call
 <Redirect> redirect a call
 <Reject> reject a call
 <Pause> Put delay on words.

9. <Say>Hello Everyone. Welcome to PHPXperts seminar
2011</Say>
<Play>http://myserver.com/welcome.mp3</Play>
<Dial>415-867-5309</Dial>
<Gather action=‘handleMenu.php’ />
<Record action=‘handleVoiceMessage.php’ />
<Sms>Please send us payment.</Sms>

10. <?xml version="1.0" encoding="utf-8" ?>
<Response>
<Say>
Your confirmation code for "PHPXperts Seminar
2011" is "1010101010"
</Say>
<Dial>888-777-1234</Dial>
</Response>

11. <?xml version="1.0" encoding="utf-8" ?>
<Response>
<Say>
Please leave your feedback for "PHPXperts
Seminar 2011".
</Say>
<Record
action="http://myapplication.com/recordMessage.php" />
</Response>

12. <?xml version="1.0" encoding="utf-8" ?>
<Response>
<Play>http://myapplication.com/welcome.mp3</Play>
<Say>
Thank for participating in "PHPXperts Seminar 2011".
Press 1 to listen the topics. Press 2 to repeat.
</Say>
<Gather action="http://myapplication.com/handleInput.php" />
</Response>

13. <?php
require "Services/Twilio.php";
/* Set our AccountSid and AuthToken */
$sid = "ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";
$token = "YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY";
/* Outgoing Caller ID you have previously validated with Twilio */
$CallerID = 'NNNNNNNNNN';
/* Instantiate a new Twilio Rest Client */
$client = new Services_Twilio($sid, $token);
$url = "http://myapplication.com/welcome.php";
$callingNumber = "888-777-6666";
/* make Twilio REST request to initiate outgoing call */
$call = $client->account->calls
->create($CallerID, $callingNumber, $url);

14.  Let your web browser do the dialing for you
 Use twilio.js to perform client side
programming
 Make calls from the browser
 Receive calls in the browser
 Make calls between two browsers

15. <?php
include 'Services/Twilio/Capability.php';
$accountSid = 'ACxxxxxxxxxxxxxxx';
$authToken = 'xxxxxxxxxxxxxxxxx';
$clientName = "PHPXperts";
$token = new Services_Twilio_Capability($accountSid, $authToken);
$token->allowClientOutgoing('APxxxxxxxxxxxxxxx');
$token->allowClientIncoming($clientName);
$activeToken = $token->generateToken();
?>
<script type="text/javascript" src="http://static.twilio.com/libs/twiliojs/1.0/twilio.js"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
Twilio.Device.setup("<?php echo $activeToken;?>");
params = { "client" : "<?php echo $clientName;?>" };
Twilio.Device.connect(params);
Twilio.Device.incoming(function (conn) {
conn.accept();
});
});
</script>

16.  Private Chats(Unlimited one-to-one chat
sessions)
 Broadcasts (Up to 2500 viewers)
 Talk Shows (Have multiple hosts
broadcasting)
 Conferences (With up to 50 people together)

17.  Easy sign up process
 Easy to follow documentation
 Simple Javascript & actionscript library for
client side
 PHP, .NET, Ruby, Java, Node.js, Pythod library
for server side
 Already build in plugins for your need

18. <?php
require_once 'SDK/API_Config.php';
require_once 'SDK/OpenTokSDK.php';
require_once 'SDK/SessionPropertyConstants.php';
$apiObj = new OpenTokSDK(API_Config::API_KEY, API_Config::API_SECRET);
$session = $apiObj->create_session($_SERVER["REMOTE_ADDR"]);
$sessionId = $session->getSessionId();
?>
<html>
<head>
<title>OpenTok - PHPXpert Sample App</title>
<script src="http://staging.tokbox.com/v0.91/js/TB.min.js" type="text/javascript" charset="utf-8"></script>
<script type="text/javascript" charset="utf-8">
var session = TB.initSession("<?php echo $sessionId?>"); // Session ID.
session.addEventListener("sessionConnected", sessionConnectedHandler);
session.addEventListener("streamCreated", streamCreatedHandler);
session.connect(1127, "devtoken"); // OpenTok sample API key and sample token string.

19. function sessionConnectedHandler(event) {
subscribeToStreams(event.streams);
session.publish();
}
function streamCreatedHandler(event) {
subscribeToStreams(event.streams);
}
function subscribeToStreams(streams) {
for (i = 0; i < streams.length; i++) {
var stream = streams[i];
if (stream.connection.connectionId !=
session.connection.connectionId) {
session.subscribe(stream);
}
}
}
</script>
</head>
<body>
</body>
</html>

20. Thanks everyone

22. M. Mizanur Rahman
Founder & C.T.O
Informatix Technologies
C.EO
Eschool Project
ZCE, CSM & Moderator PHPXperts Group
http://booleandreams.wordpress.com