Call to webservice External (non sap) system from SAP CRM

Hi,
I have to make a call to External system from SAP CRM 5.0 system. The external system will provide a sample webservice which SAP will try to initiate
Can you please tell me:
1. What settings/object needs to be maintained in SAP in order to make this call.
2. how I can make a call to this Web-Service from a BADI and pass the values to web service and also capture the returning value.
Please explain in detail
Thanks,
Mike

Hi,
Check this
Calling web service from ABAP - version 4.6C

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Hi,
I have to make a call to External system from SAP CRM 5.0 system. The external system will provide a sample webservice which SAP will try to initiate
Can you please tell me:
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Please explain in detail
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