SAP CRM Integration with facebook

Dears,

We have CRM 7 EHP2 and we want to implement the integration with Facebook.

According to the following link there is an integration with CRM interaction center "EHP3" and Facebook. However, we do not have interaction
center and not intending to implement it so we need to integrate with the CRM application itself.

http://scn.sap.com/community/crm/blog/2013/11/08/twitteralso-facebook-is-official-integrated-into-crm-70-ehp3

Can we proceed with the existing EHP or we must have EHP3? It will be highly appreciated if you support me with any documentation or more information about the subject.

Thanks.