TVAS Implementation

Tools & Utilities
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TVAS Implementation

We have got a requirement where we need to implement  TVAS(Teradata Virtual Access Service) for reading  data from SAP BW Info cubes. Can someone please provide me some insight on this tool ?I wanted to know more about architecture and how this tool looks like? GUI or somekind of utility where we need to write some code? I tried to get some information from Teradata sites.But I was not succefull in finding any TVAS documentation. Hence It would be great, if someone can direct me to proper documentation for TVAS with respect to architecture , implementation as well.

Thanks.