Decision Data 3000 Series User Manual page 10

Features
• Double-byte character set graphic field support
• Simple Network Management Protocol (SNMP)
• Flexible configuration options
• System expandability (can be implemented in the field)
Remote workstation
attachment
Local processing for non-
programmable
workstations
Support for
programmable
workstations
Twinaxial workstation
attachment
Communication network
interface options
Wide area network (WAN)
communication
2
Attachment of workstation located in remote sites to one or
more AS/400s located in a central location.
The 3494 manages information exchanges with the AS/400
system over a communication network.
A non-programmable workstation (NWS) is a workstation
which is incapable of processing information on its own.
Twinaxially attached workstations and printers are examples
of NWSs.
The 3494 can process keystrokes and field entries locally
without communicating with the AS/400. This processing
improves the response time for accepting and processing
keystrokes. When the information is ready for transmission
to the AS/400, the 3494 manages the flow of information
over the communication network.
A programmable workstation (PWS) is a workstation which is
capable of processing information independently of the
AS/400 and can also exchange information with the AS/400.
PCs running Client Access/400 are examples of PWSs. The
3494 supports attachment of PWSs and manages the SNA
LU 6.2 sessions established. Session can either be PWS
initiated or Host initiated.
Twinax attachment is provided for either 28 devices
expandable to 56 devices via a Twinax expansion adapter.
The 3494 provides communications to the AS/400 through a
variety of network interfaces allowing communication to
different types of networks.
The 3494 supports SDLC and X.25 communication using
V.24, V.35 and X.21 interfaces:
V.24 Adapter: The V.24 communication card can