Hello Anshita,
Not sure if it is first time that you use CRM interaction center, is it upgrade to ehp1? Or is it totally new for you?
Following link includes many information:
SAP Customer Relationship Management 7.0 – SAP Help Portal Page
If you are new, following document provides some introductions to interaction center:
Also, regarding interaction center, there are many helpful documents:
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Best Regards, Corrine