2011-09-19 03:45:09 +00:00
|
|
|
<!DOCTYPE html>
|
|
|
|
|
<html>
|
|
|
|
|
<head>
|
|
|
|
|
<meta charset='utf-8'>
|
|
|
|
|
<title>KalSMS</title>
|
|
|
|
|
<link rel='stylesheet' type='text/css' href='styles/site.css' />
|
|
|
|
|
</head>
|
|
|
|
|
|
|
|
|
|
<body>
|
|
|
|
|
<a href="http://github.com/youngj/KalSMS"><img style="position: absolute; top: 0; right: 0; border: 0;" src="http://s3.amazonaws.com/github/ribbons/forkme_right_darkblue_121621.png" alt="Fork me on GitHub" /></a>
|
|
|
|
|
|
|
|
|
|
<div id="container">
|
|
|
|
|
|
|
|
|
|
<h1><a href="index.html">KalSMS</a>
|
|
|
|
|
|
|
|
|
|
<span class="small">
|
|
|
|
|
SMS/MMS gateway for Android
|
|
|
|
|
</span>
|
|
|
|
|
</h1>
|
|
|
|
|
|
|
|
|
|
<div class='menu'>
|
|
|
|
|
<a href='index.html'>Home</a>
|
|
|
|
|
·
|
|
|
|
|
<a href='install.html'>Install</a>
|
|
|
|
|
·
|
|
|
|
|
<a href='how.html'>How it Works</a>
|
|
|
|
|
·
|
|
|
|
|
<a href='serverapi.html'>API Reference</a>
|
|
|
|
|
·
|
|
|
|
|
<a href='comparison.html'>Comparison</a>
|
2011-09-19 05:21:05 +00:00
|
|
|
·
|
|
|
|
|
<a href='history.html'>History</a>
|
2011-09-19 03:45:09 +00:00
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<h2>How it Works</h2>
|
|
|
|
|
|
2011-09-19 06:00:30 +00:00
|
|
|
<p>
|
|
|
|
|
In the simplest configuration, KalSMS only needs to be installed on one phone.
|
|
|
|
|
Suppose that you have installed KalSMS on an Android phone in Dar es Salaam,
|
|
|
|
|
Tanzania, with phone number <code>+255987654321</code> (local number <code>0987654321</code>),
|
|
|
|
|
with GSM service from Zantel.
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<p>
|
|
|
|
|
Suppose also that your web server is <code>example.com</code>, and its servers are located in London.
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<p>
|
|
|
|
|
In Dar es Salaam, you would put the Android phone in an office with internet access and a Wi-Fi router,
|
|
|
|
|
and connect the phone to the Wi-Fi network. (Wi-Fi is not strictly necessary, since KalSMS will also
|
|
|
|
|
work over the phone's mobile data connection, but Wi-Fi is likely to be more reliable and cheaper.)
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<p>
|
|
|
|
|
Then your network would look like this:
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<p>
|
|
|
|
|
TODO
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<p>
|
|
|
|
|
Typically your organization will need only one phone running KalSMS in a
|
|
|
|
|
particular country. However, it is possible to use multiple phones to load-balance requests
|
|
|
|
|
for higher throughput, to offer different user services, or to serve different mobile networks.
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<h3>Receiving incoming SMS and sending replies</h3>
|
|
|
|
|
|
|
|
|
|
<p>Here is an example of how KalSMS would forward an incoming SMS to your server, and send a SMS back as a reply:</p>
|
|
|
|
|
|
|
|
|
|
<ol>
|
|
|
|
|
<li>User in Tanzania, using Nokia phone with phone number <code>0555551234</code>, sends SMS message to <code>0987654321</code></li>
|
|
|
|
|
<li>Your Android phone at <code>0987654321</code> receives SMS</li>
|
|
|
|
|
<li>KalSMS sends SMS to <code>example.com</code> via HTTP</li>
|
|
|
|
|
<li>example.com processes the message and returns SMS reply in HTTP response</li>
|
|
|
|
|
<li>KalSMS forwards SMS reply to <code>0555551234</code></li>
|
|
|
|
|
</ol>
|
|
|
|
|
|
|
|
|
|
<p>
|
|
|
|
|
Since users generally are charged only for outgoing messages in Tanzania, the user would be charged
|
|
|
|
|
for sending one local SMS message, and your phone would also be charged for sending one local SMS message.
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<h3>Sending outgoing SMS notifications</h3>
|
|
|
|
|
|
|
|
|
|
<p>KalSMS uses a different process to send SMS notifications that were not in response to an incoming message.</p>
|
|
|
|
|
|
|
|
|
|
<p>Assume now that <code>example.com</code> has multiple phones using KalSMS in different countries,
|
|
|
|
|
and it is configured to send all messages to phone numbers with a <code>255</code> prefix (Tanzania's country code)
|
|
|
|
|
via the cell phone with number <code>+255987654321</code>.
|
|
|
|
|
|
|
|
|
|
<ol>
|
|
|
|
|
<li><code>example.com</code> wants to send an SMS message to <code>+255555551234</code></li>
|
|
|
|
|
<li><code>example.com</code> identifies that the recipient number has a <code>255</code>
|
|
|
|
|
prefix, and chooses sender phone number <code>+255987654321</code></li>
|
|
|
|
|
<li>The next time KalSMS polls <code>example.com</code> for queued outgoing messages
|
|
|
|
|
for its phone number <code>+255987654321</code>, the server responds with
|
|
|
|
|
the message to send
|
|
|
|
|
</li>
|
|
|
|
|
<li>KalSMS forwards the message to <code>0555551234</code></li>
|
|
|
|
|
<li>KalSMS notifies <code>example.com</code> via HTTP that message was sent</li>
|
|
|
|
|
<li><code>example.com</code> removes the SMS message from its queue of outgoing messages.</li>
|
|
|
|
|
</ol>
|
|
|
|
|
|
|
|
|
|
<p>
|
|
|
|
|
In these examples, even though SMS messages are being communicated between Dar es Salaam and London,
|
|
|
|
|
all SMS messages are sent domestically and are not charged as international SMS messages.
|
|
|
|
|
</p>
|
2011-09-19 03:45:09 +00:00
|
|
|
|
|
|
|
|
<div class="footer">
|
|
|
|
|
get the source code on GitHub : <a href="http://github.com/youngj/KalSMS">youngj/KalSMS</a>
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
</div>
|
2011-09-22 06:10:31 +00:00
|
|
|
|
|
|
|
|
<script type="text/javascript">
|
|
|
|
|
|
|
|
|
|
var _gaq = _gaq || [];
|
|
|
|
|
_gaq.push(['_setAccount', 'UA-25868450-1']);
|
|
|
|
|
_gaq.push(['_trackPageview']);
|
|
|
|
|
|
|
|
|
|
(function() {
|
|
|
|
|
var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
|
|
|
|
|
ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
|
|
|
|
|
var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
|
|
|
|
|
})();
|
|
|
|
|
|
|
|
|
|
</script>
|
2011-09-19 03:45:09 +00:00
|
|
|
|
|
|
|
|
</body>
|
|
|
|
|
</html>
|
