This section describes the interface to the synchronous dumb card device driver used by the Microsoft® SNA Server-supplied SDLC and X.25 SNALinks. The interface provides a simple but flexible mechanism for tranferring frames of data through a dumb synchronous communications card (such as the IBM MPCA card).
This interface is intended primarily for IHVs who wish to provide drivers for their own dumb cards that will be directly compatible with the SNA Server-provided SDLC and X.25 SNALinks. It can also be used by IHVs who intend to write their own SNALinks and wish to ensure that their drivers conform to the standard SNA Server model.