Does Conference(AES) available under Data Node in OD work only when the VOIP connection is set to H323 based connectivity or works in AAEP setup with VOIP connection as SIP?
Conference requires AESConnector, what else would it required?
I need to setup a conference between Agent on AACC and Customer who called up the AAEP IVR application and retain the call control on AAEP.
On AES it requires TSAPI pro license or anything more?

Oh yes, CTI is for h.323. I would recommend the bridged transfer if that works for you. I am not sure of the licensing of TSAPI and AES.
It sounds like the bridge transfer would do what you need.