CRM IC - Contact Person Create - Copying email/fax from Account

Dear Masters,

In CRM Interaction Center - After Account Identification, When i try to create a Contact person by entering Name, Telephone, email/fax, its taking entered details.

But when i try to create a Contact person by entering Name, Telephone number WITHOUT EMAIL/FAX, its creating Contact person and adding default email/fax to contact from Account ID details. I think its a standard functionality.

I have a requirement to stop this adding default email/fax from Account details when we left blank in contact create page.

Please help me with the possible solutions for this requirement.

Thank you in advance,

Kalam.A