How to connect CRM 7 to Java Backend? Test?

Hi All:
How do I connect the CRM ABAP stack to an installed standalone (as per install guide) stack? I have followed the install manual but I still do not see how the connection is made!
How do I test this connection to know whether it is working or not? (ABAP CRM calling something in Java CRM component)
Also how do I attach my installed TREX?
Thanks
Tony.
PS: I have already followed the respective install guides as well as post install section of the guides.

Hello ,
Please check the guide from the link http://service.sap.com/instguides
Installation Guide
SAP CRM 7.0 Java on Windows: Oracle
Based on SAP NetWeaver 7.0 including Enhancement Package 1
PUBLIC Document version: 1.1 ‒ 02/05/2009
Section: Page 98
5.20 Checking the Availability of Back-End Systems for CRM Java Components
After the installation, you have to check the availability of back-end systems as follows:
1. To test the connection to the ABAP back-end system, you create a back-end user [page 99].
2. Depending on various business processes, you check the following back-end systems:
ABAP system [page 100]
TREX Server [page 102]
http access to eBay (selling via eBay processes only) [page 102].

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