The file ID of the Service Class Template(SCT) file. The SCT holds the connection specific parameters for this module in the ingress direction(From Network to the Switch). Terminologies used: SCT : Service Class Template The Service Class Template ( or Service Template or SCT ) provides a means for inferring extended parameters, which are generally platform-specific, from the set of standard ATM protocol parameters passed in VSI(Virtual Switch Interface) connection setup primitives. A set of Service Templates are available in a non-volatile storage and is downloaded onto each Service Module on power up. In general, SCTs contain two classes of data. One class consists of parameters necessary to establish a Virtual Connection (i.e. Per-VC) and includes entries such as UPC(Usage Parameter Control) actions, various bandwidth-related items, per-VC thresholds, and some hardware-specific items.The second class of data items includes those necessary to configure the associated Class-of-Service Buffers that provide the QoS support.