HP 3000 Manuals

General Information Manual

Open Wide Area Networking 

The Hewlett-Packard open wide area networking solution is the foundation
for open system networking.  It uses X.25 packet switching technology,
one of the most widely and highly developed international technologies.
The HP open wide area networking product family includes cost-effective,
entry-level products such as the HP2335A asynchronous PAD and the HP
Model 45 X.25 switch and multiprotocol PAD. They are typically used to
build turn-key solutions for connecting remote terminals and printers to
central systems and to concentrate multiple X.25 access lines as well as
IBM SNA/SDLC and BSC access lines to one or more systems.  Also, multiple
Model 45s can be interconnected to build a private X.25 network linking
multiple and distributed sites.

The product family also includes the HP OpenView Switch/PAD Manager
application to manage HP 2335As and HP Model 45s from an HP OpenView PC.
Since this application fully coexists with the OpenView DTC manager on
the same platform, it provides a real and integrated system and network
management solution under the OpenView umbrella.  (Please refer to "HP
OpenView Switch/PAD Manager" in the "Integrated Systems and Network
Management" section for more information).

The key advantages of using the HP open wide area networking solution
include line and equipment cost savings (typically 30 percent to 50
percent) and single point of control for both HP systems and networking
equipments through the use of the HP OpenView PC station.


          Figure 5-11.  Open Wide Area Networking 

HP 2335A X.25 Multiplexer 

The HP 2335A X.25 Multiplexer is a high-performance standalone device
providing connections for up to 16 terminals, printers or PCs in terminal
emulation mode to one or more remote HP 3000 using one X.25 link.  The HP
2335A operates as an X.25 PAD to connect asynchronous devices over a
public or private network to remote systems.  Also, it can be used as a
statistical multiplexer over a leased line.  Finally, the HP 2335A can be
connected to various systems including the HP 3000, HP 9000, and HP 1000
systems as well as Digital VAX systems.

HP Model 45 X.25 Switch and IBM PAD 

The HP Model 45 is a high-performance, cost-effective X.25 switch
providing connections for up to 20 devices.  It can operate as an X.25
concentrator for remote X.25 device access (2335A, HP or non-HP systems)
to one central system such as an HP 3000 900 Series.  Also, it provides
one single access point to an X.25 public network for multiple systems,
thus reducing the communication bill.  More, because the Model 45
supports not only the X.25 standard but also IBM's proprietary SNA/SDLC
and BSC's protocols, it is easy to build a real HP/IBM multivendor system
and network environment based on Model 45s.  Finally, several HP Model
45s can be interconnected to build a cost-effective, private X.25 network
linking multiple and distributed sites.

MPE/iX 5.0 Documentation