The ???killer app??? is something far simpler than you may
think. It??™s simply providing an infrastructure that supports how subscribers communicate
with one another??”while shopping, while driving, while boating. By sending text,
pictures, audio clips, music files, video streams, and voice. Think of IMS as the man
behind the curtain, providing control over all of these communications.
The Intelligent Network and Signaling System #7
Today??™s networks were designed primarily for voice communications. Sometime in the
early 1960s it was determined that the then-current method of call control was not
only inefficient, it was highly susceptible to fraud and did not support the delivery of
applications such as Freephone (800 in the U.S.) and Calling Name.
Another fundamental problem with telephone networks was the requirement for
switches to communicate with one another to exchange dialed digits and other call
data. Prior to the digitization of the world??™s networks, most of this communication was
done over telephone circuits using audible tones.
However, through digital communications, the industry was about to expand the
communications between the network entities to include much more. This is when the
Intelligent Network (IN) was conceived.
The telephone industry set out to create a new architecture that would provide more
call control central in the network, and support the delivery of new services.
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