There were also initial discussions in the subgroup WP3 network aspects chaired by Jan Audestad (Telenor).The result was approved by the main GSM group in a June '85 document which was distributed to industry.The last three words transformed SMS into something much more useful than the prevailing messaging paging that some in GSM might have had in mind.The material elaborated in GSM and its WP1 subgroup was handed over in Spring 1987 to a new GSM body called IDEG (the Implementation of Data and Telematic Services Experts Group), which had its kickoff in May 1987 under the chairmanship of Friedhelm Hillebrand (German Telecom).Through these organizations the technology was made freely available to the whole world.This proposal was further elaborated in GSM subgroup WP1 Services (Chairman Martine Alvernhe, France Telecom) based on a contribution from Germany.
WP4 created a Drafting Group Message Handling (DGMH), which was responsible for the specification of SMS.
Callers can phone into the system, and their phone numbers and identities are never revealed to each other.
So it’s a secure and fantastic way of hooking up with someone.
The first action plan of the CEPT Group GSM was approved in December 1982, requesting that, "The services and facilities offered in the public switched telephone networks and public data networks ...
should be available in the mobile system." The GSM is optimized for telephony, since this was identified as its main application.