The CellPath 90 supports Circuit Emulation Services (CES) for applications requiring a fixed delay, lossless end-to-end connection through the network In essence, CES provides a virtual private line service to the connecting application
Circuit Emulation Service: The ATM Forum circuit emulation service interoperability specification specifies interoperability agreements for supporting Constant Bit Rate (CBR) traffic over ATM networks that comply with the other ATM Forum interoperability agreements Specifically, this specification supports emulation of existing TDM circuits over ATM networks