SMS is required
Dr. H. Nikolaus Schaller
hns at computer.org
Thu Dec 6 17:41:42 CET 2007
> I did not know they charge you extra for SMS in the US, since SMS
> is the data transfers that happens between pressing the 'call'
> button and the connection to the other phone (actually SMS was a
> hack found out by Nokia people back in the '90's)
It was part of the GSM standard right from the beginning. The first
SMS was transmitted by Vodafone in UK in 1992. And has its roots in
the ISDN D-channel protocol as well as Packet Radio from the 80ies.
This all finally goes back to IBM SDLC and the Internet UDP protocols
from the 70ies. It was "just" moved from a wired to a wireless
So much to "innovations" :-)
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