Consuming a TCP based service in Biztalk 2006 R2?

Greetings,
I have hosted a WCF service in Biztalk Server 2006 R2 that uses net.TCP adapter. I am restricted to use this service from an Oracle Stored procedure what connects with the biztalk server using TCP.
I have used such a procedure to communicate with TCP based services in the past (these services were on Biztalk 2006 and used a custom TCP adapter), but this is my first experience in consuming a WCF service.
Can somebody guide me on how to consume such services ?
In short, I need to send a TCP request from sockets instead of using the .NET way of adding service references.
I would really appreciate your response.
Thanks.