vision :
To make a model that separates the services offered by
fixed-line (traditional telcos), mobile (traditional cellular), and converged service providers (cable companies and others who provide triple-play — voice, video, and data — services) from the access networks used to receive those services.
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Layers :
IMS architecture is broken into distinct layers:
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Drivers :
Revenue streams for plain vanilla voice services are sharply falling and the need of the hour is to propose smart intuitive and creative service to kep up the Telecom market alive .
Telecom R & D 
hello , this looks like a good start .. looking forward to hear more from you .
IMS means so much more … what i see here is a very short and abstract description , try and be more explanative .
Hai … Jack ang burg … Thank you so much for taking the time to comment on the blog … i shall post more in due time
looking forward for more….