Introduction to Tandem X.25 Capabilities

Using TCP/IP and OSI over X25AM
X25AM Implementations
065307 Tandem Computers Incorporated 3–13
Figure 3-6 Railway Reservation System over both LAN and WAN Configurations
Seat
Reservation
Database
Ethernet LAN
Nationwide
Network of LANs
Ethernet LAN
UNIX
System
Workstations and
Printers
Time Table
Application
DEC UNISYS
Time Table
Application
Legend
Logical connection
Ethernet LAN
Ethernet LAN
NonStop SQL
Pathway
Servers
Pathway
Requesters
Pathway
Servers
Front End
Process
OSI/TS OSI/TS OSI/TS OSI/TS
IDS IDS
SQL
Database
TLAM TLAM X25AM X25AM
NonStop System
Pathway
Requesters
Front End
Process
Front End
Process
Front End
Process
Requester
UNIX
System
UNIX
System
PAD
Workstations and
Printers
Public
Packet-Switching
Data Network
RequesterRequester
042
X.25
X.25