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1992-05-16
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HP Model 45-Multiprotocol X.25 Switching Concentrator, Technical Data
Product Numbers J2000A, J2001A
The Model 45 is a combined X.25 switching node and a multiprotocol PAD.
It connects HP and non-HP systems together, as well as concentrates
devices with different protocols.
[Figure: HP Model 45-Multiprotocol X.25 Switching Concentrator, caption:
none]
The Model 45 can operate as a stand-alone switch; also multiple Model
45s can be interconnected to form a small network. It can also provide
very cost-effective multiprotocol access to large backbones such as
public or private packet networks.
Features and Benefits
o Simple entry-level solution for X.25 multivendor networking.
o Reduced communication and equipment costs (concentration of multiple
X.25, SNA/SDLC, and asynchronous lines, on one or more X.25 access
lines).
o Flexible connection to public X.25 data networks (Telenet, Transpac,
PSS, Datex-P, Venus-P, etc.) or private X.25 networks.
o Switching and protocol conversion can be software-defined on an
individual port basis providing flexibility and easy reconfiguration.
o Operates in both standalone and feeder node environments.
o In standalone environments: remote or local control, configuration and
monitoring of port, node and link parameters from ANSI terminal/PC
monitor. Alarms, node, and network events can be displayed on the
console or printed out on a line printer attached to the local Model
45, or to a central Model 45.
o In backbone environments: centralized control and configuration from
the HP OpenView Switch/PAD Manager station.
o Alternate leased line backup over public or private data networks.
Functional Description
The Model 45 is a combined X.25 switching node and multiprotocol PAD
supporting X.25, SNA/SDLC, and asynchronous protocols. It consists of
one or more 4 port multiprotocol Line Processor (LP) cards and an
optional 4 port Asynchronous Expansion (AE) card. Individual ports on an
LP card can be configured for any of the supported protocols (X.25,
SNA/SDLC, and asynchronous). The optional AE card only supports the
asynchronous protocol.
The Model 45 can operate as a standalone, intersystem, and terminal
switch, and as a multiprotocol line concentrator to a public network.
Configuration, control, and monitoring functions can be performed,
locally or remotely, via an ANSI terminal, an attached PC monitor and
keyboard, or the HP OpenView Network Management.
It can also be interconnected with other Model 45s to form a small
network linking the systems and terminals at distributed customer sites.
X.25 Switching
The Model 45 provides an integral X.25 communication interface and
packet switching capability. Any or all of the ports on an LP card can
be configured as X.25 access or switching ports. The route taken by an
X.25 packet entering the switch is defined by a routing table configured
by the operator. Alternative paths can be defined to be used in the
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event that the primary path is unavailable or fails. The Model 45 also
offers a Hunt Group feature that allows load leveling across several
ports.
The SNA PAD
The Model 45 features an integral SNA/SDLC PAD that enables
communication between remote SNA Control Units and an SNA host processor
over an X.25 network. Configurable PAD types include the TPAD and the
HPAD for any port of a Line Processor card. The logical channel
connection between an HPAD and TPAD can be either a Permanent Virtual
Circuit (PVC) or a Switched Virtual Circuit (SVC).
The SNA/SDLC Terminal PAD, or SNA TPAD, acts as a gateway between SNA
users over an X.25 network. It offers communication between remote SNA
Control Units and IBM host or compatible computers with the NPSI
software, or connection to the X.25 network through an SNA HPAD.
The SNA/SDLC Host PAD, or SNA HPAD, acts as a gateway between SNA
host computers and an X.25 network. It offers communication between SNA
host computers and remote SNA computing devices having X.25/QLLC support
or connected to the X.25 network through an SNA TPAD.
Both the TPAD and the SNA HPAD perform flow control, automatic call
setup, and packetizing of SNA information frames. The SNA TPAD and HPAD
perform local polling with the attached SNA device, thus keeping network
traffic to a minimum. The HPAD supports up to 16 SNA TPAD connections,
and each TPAD port can support one Control Unit.
The Asynchronous PAD
The Model 45 features an integral asynchronous PAD that facilitates
transparent communication between remote terminals or printers to one or
more central computers over an X.25 network. Any or all of the ports on
the LP card can be configured as an asynchronous PAD port. In addition,
one optional AE card can be configured per switch to provide up to four
asynchronous PAD ports.
Network Management
In standalone and small network environments, the Model 45 can be
managed locally via an attached PC monitor and keyboard, which can, in
turn, be used to control remote Model 45s. The alternative is to use an
ANSI terminal connected locally to the COM1 port, or remotely via a PAD.
The Model 45 has a menu-driven user interface to perform online control,
configuration, node monitoring, and statistics management operations.
The Model 45 also features an online help facility.
A printer can be connected to the parallel port of the Model 45 to
display alarms and network events and facilitate online monitoring and
control of the network. A single printer can be used to collect all the
events generated by the Model 45s connected to the network.
An HP OpenView network management software running on an HP OpenView
PC is also available to manage small networks based on Model 45s and
HP 2334A/HP 2335As. It provides easy-to-use monitoring and control
functions using a standard OpenView graphical interface.
For more information, please refer to the "HP OpenView Switch/PAD
Manager" and "HP OpenView DTC Manager" data sheets.
Functional Specifications
Desktop Package
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(Max. 12 ports):
o 4-8 synchronous/asynchronous RS-232-C (CCITT V.24/V.28) ports.
o 4 optional asynchronous only RS-232-C (CCITT V.24/V.28) ports.
o Power: 134 W continuous; 176 W peak; 90-132 V or 198-264 V; 47/63 Hz.
o Cabinet Dimensions: 42.5 cm - 39 cm - 16 cm high.
Tower Package
(Max. 20 ports):
o 4-20 synchronous/asynchronous RS-232-C (CCITT V.24/V.28) ports, or
o 4-16 synchronous/asynchronous RS-232-C (CCITT V.24/V.28) ports plus 4
optional asynchronous only RS-232-C ports.
o Power: 200 W continuous; 330 W peak; 90-132 V or 198-264 V; 47/63 Hz.
o Cabinet Dimensions: 21 cm - 50 cm - 60 cm high.
General Specifications
o Up to 4 configurable ports per LP card.
o RS-232-C (CCITT V.24/V.28) interface.
o Maximum aggregate throughput = 256 Kbps per LP card.
o Supports Switched Virtual Circuits (SVC) and Permanent Virtual
Circuits (PVC).
o Supports up to 2048 simultaneous VCs.
o Up to 300 entries per database file.
o Alarm and Event displaying and printing to a local or a remote
printer, with time stamp, node and port IDs, type of events (link
up/down, node restarting, PVC up/down, restart indication).
o Transfer file function for files up to 256K.X.25 Interface
o Compatible with CCITT X.25 Nov. 1984 (Level 2). X.25 ports operate as
DTE or DCE (provides clocking).
o Line speeds up to 64 Kbps on each synchronous port.
o Maximum packet size = 256 bytes.
o X.25 Facilities Supported:
- Transparent to the User Facilities Field.
- Complete Facility Field can be changed when acting as a Gateway
(address translation facility).
o Monitoring, configuration, and control functions available locally or
remotely through an X.25 call to the logical command port.
SNA/SDLC Interface:
o Up to 64K per port for frames up to 280 bytes.
o Up to 9600 per port for frames greater than 280 bytes with all other
LP ports at up to 19200 bps.
o SNA/SDLC ports can operate as DTE or DCE (provides clocking).
o Data link control: IBM SDLC full-duplex mode at level 1 and
half-duplex at level 2.
o Configurable SDLC frame size.
o Maximum frame size is 4105 bytes.
o Configurable station addresses.
o Point-to-Point operation for TPAD connections.
o Support of NRZ or NRZI.
o Autocall on both HPAD and TPAD, 1 VC per port.
o Supports 4 modes:
- HPAD
- TPAD
- NPAD (Host-to-Host)
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- XPAD (Transparent mode)
o QLLC/NPSI compatible for TPAD/HPAD connections.
Safety Approvals
o UL 478
o IEC 380/435/950
o CSA C22.2 No 220
o BS 6301RFI (Radio Frequency Interference) Approvals
o FCC Part 15, Subpart J, Class A
o FTZ 1046/84
o VCCI Class 1
o EN 55022 Class A
o SABS
Environmental Characteristics
Temperature:
Operating: 0 degrees C to 40 degrees C
Desktop Package: 0 degrees C to 30 degrees C (Class C2)
Tower Package Storage: -40 degrees C to 70 degrees C
Altitude:
Operating: 0 ft to 15,000 ft (0 to 4,600 meters)
Storage: 0 ft to 50,000 ft (0 to 15,200 meters)
Relative Humidity:
Operating: 15% to 95% at 40 degrees C
Storage: 90% to 24 hrs at 65 degrees C
Certified Public Networks
Certified:
Country PDN
Spain Iberpac
Germany Datex-P
Italy Itapac
Holland Datanet1
Belgium DCS
Finland Datapak
Taiwan Pacnet
Luxembourg Luxpac
Norway Datapak
USA Telenet
CompuServe
Currently in Progress:
Japan Venus-P
UK PSS
South Africa Saponet
Hong Kong Datapak
Austria Datex-P
Malaysia MAYPAC
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Self-Certification:
France Transpac
Switzerland Telepac
Canada Datapac
Australia Austpac
Denmark Datapak
Singapore Telepac
South Korea Dacom-Net
New Zealand Pacnet
Hong Kong Intelpak
Please check with your local HP organization to confirm latest approval
information.
Ordering Information
HP J2000A 4 Port Switch - Desktop Package (includes multiprotocol LP
card, X.25, Async, and SNA/SDLC software and manuals)
HP J2001A 4 Port Switch - Tower Package (includes multiprotocol LP
card, X.25, Async, and SNA/SDLC software and manuals)
HP J2004A Additional 4 Port Multiprotocol LP Card (X.25, Async, and
SNA/SDLC)
HP J2006A Optional 4 Port Async Expansion Card (includes required
quadrivial cable); one per node maximum
HP J2007A Monitor/Keyboard Package (includes monitor, MMVA card and
keyboard)
HP J2008A Quadrivial Cable - 4 DTE connectors
HP J2009A Quadrivial Cable - 2 DTE + 2 DCE connectors
HP J2010A Quadrivial Cable - 4 DCE connectors
HP J2011A Quadrivial Cable - 3 DTE + 1 DCE connectors
HP J2012A Quadrivial Cable - 1 DTE + 3 DCE connectors
From HP Networking Communications Specification Guide,
5091-3821E, 9205, p 567
Associated files: A3821567.DOC, la3821hp.plt, la3821hp.gal
HP Model 45-Multiprotocol X.25 Switching Concentrator, Technical Data