User guide

16 DC 900-1303C
Freeway Client-Server Interface Control Document
Freeway can be configured with multiple WAN interface processor boards, which are
Simpact intelligent communications processors (ICPs). Each ICP runs the communica-
tion protocol software using Simpact’s OS/Impact real-time operating system.
Other Freeway features include:
• Freeway server standard support for Ethernet and Fast Ethernet LANs running
the transmission control protocol/internet protocol (TCP/IP)
• Freeway server standard support for FDDI LANs running the transmission con-
trol protocol/ internet protocol (TCP/IP)
• Support for multiple ICPs (four, eight, or sixteen communication lines per ICP)
• Wide selection of electrical interfaces including EIA-232, EIA-449, EIA-530, and
V.35
• Server management and performance monitoring with the simple network
management protocol (SNMP), as well as interactive menus available through a
local console, telnet, or rlogin
• Variety of off-the-shelf communication protocols available from Simpact which
are independent of the client operating system and hardware platform
• Support for multiple WAN communication protocols simultaneously on a single
Freeway server
• Elimination of difficult LAN and WAN programming and systems integration by
providing a data link interface (DLI) to access Freeway services through the trans-
port subsystem interface (TSI)
• Creation of customized server-resident and ICP-resident software, using
Simpact’s software development toolkits