Customer master integration with CLM

Hi,

We are in need of bringing the customer master info from ECC. Does SAP provide standard functionality of interfacing between CLM and ECC Customer master info? We know that ECC Vendor master integration with CLM is standard in version 7.0 and 9.0 but is Customer master integration provided as standard? Or would we need to build a custom interface to integrate ECC Customer master and CLM?

Thank you,

Vikram