How SMS Works
by: Jim
Sherman
SMS, or Short Message Service, is the technology
behind
what we often refer to as 'text messages' or 'SMSes', as well as what
allows for news alerts on cellular phones. In recent years SMS has
ballooned to over a 50 billion dollar industry and is quickly taking
the communications world by storm.
Short Message Service actually refers to a
framework
that uniquely allows computers, or in this case phones, to communicate
with each other without the need of a central hub. With SMS, phones can
find each other, send short packets of information back and forth, and
do it all without any central computer to guide them. But because the
system does not rely upon fixed lines like a land based telephone
system does, the amount of information that can be sent at one time is
limited in size. This depends on the language spoken, but for English
letters this typically means around 150 characters (Chinese and
Japanese letters are limited to 70).
Quite recently, however, new developments in the
technology have allowed for even longer messages to be sent. Long or
Concatenated SMS is a development that allows multiple messages to be
combined to form a single message. In effect, what happens is that your
phone actually sends out a few smaller messages and then the receiving
phone simply compiles those messages so that for users on both ends, it
appears as though the message were cohesive. While there are some
limitations, the brilliance behind SMS is that because there is no need
for central hubs, and thus the system can be expanded indefinitely
without any concerns of it slowing down or becoming more expensive.
The most common form of SMS is 'texting'. This
usually
takes place with a cellular phone in which individuals use the letters
behind the number pad on their phone to spell out words and phrases and
then send them out. Because many companies charge by the word,
individuals have come up with a sort of 'texting slang' to cut down on
the amount of words required to convey a particular message. For
example, 'gr8' and 'BTW' mean 'great' and 'by the way'. In addition,
other words have just been shortened, such as 'lata' to mean 'later'.
Most users simply pick up the lingo through frequent use, and although
some slang is widely understood and used, other shortcuts are developed
within circles of friends and family.
The major advantage of SMS is its price. The price
is
typically $0.05 per message, a significant cut below that of
traditional telephony and cell phone per-minute charges. The savings of
SMS has its roots in the nature of the technology. Short Message
Service, like SIP, is modeled on a peer to peer model and not a cog and
wheel like traditional communication systems. This means that instead
of having to route a message through a central hub, your text goes
straight from you to its destination. This has radically cut down on
the cost of SMS implementation and led to its overwhelming popularity
throughout the world.
Short Message Service (SMS) has radically changed
the
face of the communications industry. While the practice has become
quite common throughout the world, it has only recently become popular
here in the United Stats, a growth partly predicated upon, surprisingly
enough, its featured role in the show American Idol. The fact that
'texting' is quickly gaining both in popularity and recognition in the
United States is not surprising however, due to its ability to offer
users a cheap, quick, and often fun way to communicate with friends and
family.
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