SMS only 160 characters
Why is the limit of
an SMS 160 characters?
It’s not a decimal
number ie. not a multiple of 10 and has nothing to do with dozens (12), not even a butcher's dozen. So why
is there a limit of 160? BTW if you often push the limit of 160 characters,
then you really need to get a life. But, back to basics … why the limit of 160?
There are 2 stories
and reasons suggested.
A man called Friedhelm
Hillebrand, Chairman of the Global System for Mobile Communications (GSM), had
the task of setting the limit on the amount of characters a text message could
contain. This would become the international standard.
He did this by analysing typical sentences viz. questions and answers. He also reviewed messages
written on postcards and received by Telex transmissions. (Telex was not so
long ago the state of the art message transmission technology.)
Friedhelm Hillebrand
arrived at the answer of 160 characters. His recommendation became the standard.
The second story and a
more technical consideration related to the size of packets transmitted via the
GSM (mobile phone) network. The packet size is 140 bytes and with a bit of
technical ‘compression’ this equated to a text message limit of 160 characters.
Who knows where the
truth lies. Perhaps the technical answer (of 160) was tested by Friedhelm’s research
into written messages.
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