1-4
Getting Started
Sample Network Topology
Sample Network Topology
Introduction
Figure 1-2 shows a sample network topology for the Vanguard 650 Series. This
example, depicting a State Lottery network, shows the connection for the DMS-100
ISDN switch. The example assumes that the Lottery Terminal has a 202T four-wire
interface communicating at 1800 or 2400 bps. If the interface required is V.24, then
you would configure Port 3 and set the soft switch parameter in the Node Record to a
value of NONE.
Note
Note that the remote 650D does not initiate calls in this example.
Figure 1-2. Sample 650 Network Topology
Multiple
28= ISDN BRI
Lines
SESS Packet Handler
FEP
Lottery Host
Site (2)
Multiple
Modems
Modem
Intermodel
Trunks
DPN Access
Concentrator
X.75 Circuits ISDN to X.25 Handoff
DMS Packet Handler
SESS ISDN Switch
DMS-100 ISDN
Switch
ISDN/X.25 Network One per LATA
X.42
Protocol
X.42
Protocol
Modem
Analog/Conversion
Units
Lottery Terminal
(Non-ISDN Lines)
Lottery
Terminal
Lottery
Terminal
Vanguard 652D's
Vanguard 652D's
Lottery Terminal
(Non-ISDN Lines)
Timeplex
TDM
Timeplex TDM
Network Management
Access Point for
HP OpenView
Network
Management
Station (2)
56Kbps X.25 Circuits
Maximum 2 per 6250
180 Logical Channels
per Circuit
DPN X.25
Switches with
Switch Module and
Resource Modules Minimum of 2 per LATA
Managed
Hub
Distribution Node
Facility