Eiconcard Adapters are a suite of multi-protocol synchronous serial interface boards. Eiconcard Adapters support a wide range of protocols including X.25, SDLC, HDLC, PPP, and Frame Relay. Eiconcards work in conjunction with Dialogic® connectivity software, and are supported by Dialogic® development tools and third-party products such as Microsoft Host Integration Server and IBM Communications Server.