Connection mode between SAP and PI

Hi Experts,
i now have the below question.
we know normally there are three ways of connection between SAP ECC and PI.
1. proxy
2. RFC
3. IDoc
then what is the connection mode for these three connections?
eg. ABAP connection, HTTP connection, TCP/IP connection?

Hi Aditya,
As far as I know:
1. proxy    uses type 3 connection (ABAP)
2. RFC       uses type T connection (TCP/IP)
3. IDoc      uses type 3 connection (ABAP)
However, let us wait for the response of others.
Regards,
Mark

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Connection mode between SAP and PI

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