Installation guide

16 DC 900-1564A
Synchronous Link Control (SLC) Programmer’s Guide
1.2.1 Freeway Server
The Freeway server is a stand-alone box with pre-installed ICPs. It provides multiple
data links and a variety of network services to LAN-based clients. Figure 1–1 shows a
Freeway server configuration where the client application communicates with the
Freeway ICPs using Simpact’s data link interface (DLI). Client applications can use
either the DLI or socket interface, as described in Section 1.3.1 and Section 1.3.3. A
variety of client operating systems are supported (UNIX, VMS, and Windows NT).
1.2.2 Embedded ICPs
An ICP installed in a user-provided computer is called an “embedded” ICP. Figure 1–2
shows one possible embedded ICP environment where the client application uses
Simpact’s DLI programming interface. The currently supported operating systems and
their respective supported programming interfaces are described in the following
subsections.
Figure 1–1: Freeway Configuration
WAN
Interface
Processors
Freeway Server
ICP
ICP
Ethernet LAN
3413
WAN Protocol
Options
Defense
Commercial
X.25
Bisync
HDLC . . .
SCADA
Financial
SWIFT
CHIPS
Telerate
Telekurs
Reuters
40+ Market
Feeds . . .
Industry Standard Bus
Server
Processor
Client 1
Client 2
Client n
…
…
Application
1
DLI
Application
2
DLI
Application
n
DLI