FarSync X25 T4Ee - A 4 line PCIe X.25 card

FarSync X25 T4Ee - 4 line X.25 PCIe card

The top of the range FarSync X25 T4Ee PCIe card provides 4 high performance X.25 communications lines handling many types of line signalling.

Overview

The FarSync X.25 T4Ee product is a high quality X.25 solution for business, government and military applications, it has been developed to provide high performance, versatile X.25 connectivity for Linux and Windows systems.

The PCIe card will support 4 X.25 lines at speeds to over 2.048 Mbits/s. The highly flexible universal network connector supports RS232, X.21, RS530, RS449 and V.35 network interfaces.

A number of different line signalling methods are handled, including NRZ, plus the self clocking (clock for the data is decoded from the incoming data line) NRZI, Manchester Encoding, Conditioned Diphase (also known as Differential Manchester), FM0 and FM1.

Features under Linux:

  • The T4Ee card installs seamlessly as a plug and play device under the popular Linux 32 and 64 bit distributions. The card supports Linux kernel versions 2.6 and onwards in 32 and 64 bit formats, including the leading distributions supplied by Redhat, SuSE, Debian, Ubuntu, Fedora, Slackware and more. SMP (multi-processor) systems are supported. Configuration is by a Java based GUI.
  • There are APIs to the X.25 layer, a Sockets based interface and a Java API. There is also an API to the ISO Transport layers (ISO 8073 - connection oriented).
  • IP over X.25 support is included permitting TCP/IP operation over an X.25 network.
  • XOT (X.25 over TCP/IP) support is available as an option, using the same API's as X.25. XOT can operate at the same time as X.25.
  • Up to 254 connections per line are supported as standard or up to 4095 connections using the FarSync X25 High Capacity Pack.
  • FarSite is committed to supporting the FarSync X25 T4Ee on new versions of Linux and Linux kernels as they are released. The source code for the driver and the libraries for the API are supplied with the product, allowing rebuilding by the end user for use with almost any of the current or future Linux variants. The driver supports both big-endian and little-endian memory storage formats.

Features under Windows:

  • The T4Ee card installs seamlessly as a plug and play device under Windows 10, 8.1, 8, 7, Vista, Windows Server 2012 and 2008. 32 and 64 bit Windows operating systems are supported.
  • The X.25 software has a host of features including ISO Transport (classes 0 to 3), support for OpenFT FTAM, a WinSock2 compliant Sockets API, a Java API and a LAPB layer 2 (HDLC) that is also directly accessible by its own API. The Sockets API is also accessible from .NET applications.
  • Up to 4095 connections can be supported using the FarSync X25 High Capacity Pack or 254 per line as standard.
  • IP over X.25 support is included permitting TCP/IP operation over an X.25 network.

X.25 Developers Toolkit: A comprehensive Developers Toolkit for development using APIs to X.25 and ISO Transport is included with each product covering Linux and Windows. In addition, the Windows product has a toolkit for the LAPB API. A multi-port Line Monitor and a Line Statistics application are also supplied.


Watch our informative video about our X.25 products


Typical Applications

The FarSync X25 T4Ee card is suitable for connection to all types of X.25 networks, X.25 over the ISDN D channel and leased lines. Typical applications include:

  • Private X.25 networks such as Air Traffic Control, Police, Customs, Military, Fishery, Financial and Government
  • E-Commerce gateways for credit verification
  • Mixed X.25 and IP networks
  • Billing and Mediation
  • FTAM access
  • X.400
  • PC/Server based X.25 switch and an XOT Option

The card is compatible with all public X.25 networks.


FarSync X25 T4Ee - Hardware Details

The FarSync X25 T4Ee 4 line card runs an AMD processor with SRAM and an embedded HDLC controller connected to the Server/PC through a PCIe bus.

Network Interfaces

The 4 line multi function drivers support X.21 (V.11), V.35, RS232 (V.24, X.21bis), RS530 (EIA530, RS422), RS449 (RS422), network interfaces, all soft configurable and ESD protected from static charges. Line speeds to over 2.048 MBits/s are supported.

Clock Generation

External (line generated) clocking is supported. The T4Ee also supports card generated clocks speeds from 9600 baud to 10 Mbits/s, each line can be set to a different speed.

Line signalling modes

A wide variety of line signalling modes can be handled including NRZ plus the self clocking (clock for the data is decoded from the incoming data line) line signalling modes NRZI, Manchester Encoding, Conditioned Diphase (also known as Differential Manchester), FM0 and FM1 at speeds of up to 10 MBits/s. This means separate clock lines are not required, these line signalling modes, are a soft configurable alternative to NRZ and a reliable way of handling long high speed cable runs. Some X.25 implementations particularly require conditioned diphase and this card can support those.

Line termination is supported on all the balanced pair signals for X.21 (V.11)V.35, RS485 (2 and 4 wire), RS530 (EIA530, RS422) and RS449 (RS422 signalling) operation. The line termination resistors may be soft selectable on a port by port basis. The addition of line termination resistors can be helpful in improving signal quality on long higher speed lines.

PCIe Bus Specification

The FarSync X25 T4Ee card is suitable for systems with a PCI express x1 (or higher) slot, covering single processor and multi-processor systems. The card is PCI Express Base Specification Revision 1.0a compliant.

Multiple Cards

The drivers supplied with Windows and Linux allow large numbers of lines to be supported by the installation of multiple FarSync X25 T4Ee cards in a Server. The card limit is only dependent on the PCIe slot count and resources available in the host Server.

Cables

This four port card uses a single large high density 100 pin HIPPI type connector, all four lines are available though this connector. The quad port cable HCR4 attaches to the card and splits out the four network interfaces into separate network connectors to provide support for EIA-530 (RS422) and RS232. X.21, V.35 and RS449 are available through transition connectors. Details of the cables and converters available are listed in the cables section of the order information table. Crossover cables, sometimes referred to as null modem cables, or DTE to DCE conversion cables are available, they are also detailed in the table below.


TCP/IP over X.25

The IP over X.25 support is included as part of the FarSync X25 T4Ee product and is integrated into Linux and Windows.

Linux Features: IP over X.25 support complies with RFC 1356 (IP over X.25). Higher level protocols that run over IP including TCP, UDP, HTTP and FTP are supported.

Windows Features: The IP over X.25 support complies with RFC 1356 (IP over X.25), for single and multiple X.25 destinations. Higher level protocols that run over IP including TCP, UDP, HTTP and FTP are supported.

Diagram of IP over X.25

See further details about how IP over X.25 works


APIs and X.25 Developers Toolkit

Application developers have a choice of APIs for X.25 and ISO Transport. An API selector guide is provided to assist the developer in choosing the most appropriate interface. The comprehensive Developers Toolkit is included with the product.

X.25 Developers Toolkit and API details


FarSync XOT Extension option

For Linux the XOT extension allows applications using the same API to transmit data over XOT (X.25 over TCP/IP). TCP/IP is normally routed over Ethernet on PCs and Servers. The XOT support is compatible with FarSite's FarLinX X25 Gateway and also other manufacturers XOT products. The XOT and X.25 interfaces can be used simultaneously.

The FarSync XOT Extension for Linux should be ordered at the same time that the FarSync X25 card is purchased, although a retrofit is possible.

Notes:

There is also FarSync XOT Runtime software for Linux available that allows XOT to run over the PCs standard TCP/IP connection such as an Ethernet card.

For Windows there is FarSync XOT Runtime software for Windows available that allows XOT to run over the PCs standard TCP/IP connection such as an Ethernet card.

 


FarSync X.25 High Capacity Pack option

An optional high capacity pack is available for the FarSync X25 T4Ee. The FarSync X.25 High Capacity Pack allows up to 4,095 simultaneous connections to be made; a huge increase from the standard 254 on each line. The expanded capacity applies to SVC, PVC and ISO Transport connections.

Customer applications developed to use the standard X.25 Sockets API are compatible with the FarSync X25 High Capacity Pack.

The FarSync X.25 High Capacity Pack is available for Windows and Linux, it should be ordered at the same time that the FarSync X.25 T4Ee is purchased although a retrofit upgrade is possible. One FarSync X.25 High Capacity Pack is required per card. See Order Information.


Windows port manager configuring a T4Ue
Windows Port Manager showing configuration of a 4 port FarSync card for X.25

Linux - T4Ue X.25 configuration
Linux Adapter Manager showing X.25 configuration of a 4 port FarSync card

Configuration

For both Windows and Linux configuration is by a GUI configuration application, rapid installation and easy configuration are key features of the product. See sample screens below.

The X.25 line can be reconfigured and restarted without reloading the software.

Many of the parameters such as DTE / DCE selection are determined automatically. Selecting the line speed by default automatically sets suitable timer and retry values. An advanced tab permits users to exactly specify the configuration of the line if necessary.

 

 

 

 

 

 

 

 

 

 

 


Packaging

The X.25 software firmware, drivers, utilities and the X.25 Developers Toolkit are all included on the CD-ROM supplied with the FarSync card. Cables are ordered separately.

The CD-ROM supplied with the FarSync X25 T4Ee includes:

  • Drivers for Linux, Windows 10, 8.1, 8, 7, Vista, Windows Server 2012 and 2008
  • Numerous example applications with source code
  • Documentation for all the APIs in Adobe PDF format
  • Source code for Linux drivers and API Libraries
  • Network monitor and various useful utility programs

New releases of the software with enhancements and fixes are made available for free download from the Download page in the Support section of this web site.

Software Technical Specifications
Operating systems supported

Windows 10, 8.1, 8, 7, Vista, Windows Server 2012 and 2008.

Linux distributions supplied by Redhat, SuSE, Debian, Ubuntu, Fedora, Slackware and others with kernel versions 2.6 and onwards.

Linux Kernel support All sub versions of kernel releases from 2.6 and onwards. The products may operate successfully with earlier versions of the kernel but no specific testing has been undertaken by FarSite.
SMP (Multi-Processor Systems) The software has been designed for and tested on SMP Servers
32 and 64 bit systems The FarSync X25 T4Ee can be used on 32 and 64 bit systems under Windows and Linux and 32 and 64 bit applications
X.25 Features
X.25 CCITT compliance 1980, 84 & 88
DTE/DCE operation Both and Automatic detection and selection
Maximum SVCs (all types) 254 sessions on each line, any mix of bothway, incoming and outgoing
4,095 sessions using the High Capacity Pack, any mix of bothway, incoming and outgoing
Maximum PVCs 254 sessions on each line
4,095 sessions using the High Capacity Pack
Maximum simultaneous connections 254 connections on each line
4095 connections with the High Capacity Pack
Data Packet size range 0 to 4096 bytes
Data packets per second throughput More than 2000 pps
X25 facilities supported Reverse charging, Closed User Group (CUG), Network User Identifier (NUI), Fast Select, Packet and Windows size negotiation, Extended sequence numbering (128), Throughput Class Negotiation.
Types of network connection X.25 packet switch, leased line, dial up (X.32 and dial on DTR)
Accessible via API Three APIs, a Sockets based interface, a Java API and a legacy NCB API.
IP over X.25

Supported, complies with RFC 1356

X.25 switch X.25 Switch daemon available on Linux for free download for use with the FarSync X25 T4Ee
XOT Option Features
XOT Specification Complies with RFC 1613 - X.25 over TCP (XOT)
Maximum XOT connections 4,095 on Linux, 4,095 on Windows
Maximum SVCs and PVCs 4,095 on Linux, 4,095 on Windows (any mix of SVCs and PVCs)
Data packets size range 0 to 4,096 bytes
OOB (Out of Band) data Supported for Interrupts, Resets and the D bit
X25 facilities supported Closed User Group (CUG), Network User Identifier (NUI), Fast Select, Packet and Windows size negotiation, Throughput Class Negotiation.
Accessible via API Two APIs, a Sockets based interface, a Java API
ISO Transport Features
Supplied with the X.25 software Included with both the standard product and the High Capacity Pack
Standard supported ISO 8073 (connection oriented)
Classes supported Classes 0, 1, 2 and 3
Negotiation between classes Yes
Simultaneous transport connections 254 sessions on each line,
4,095 sessions using the High Capacity Pack
TPDUs in a NSDU 1
Accessible via API Yes
Developers Toolkit

 

X.25 Developers Toolkit and API functional summary

 

Hardware Technical Specifications
Card type and PCIe Specification

AMD Processor with embedded communications controller, FarSite extended communications controller (customisable),
PCIe bus compliant with PCI Express Base Specification Revision 1.0a, x1 (single lane) bus mastering card.

Physical characteristics Short card (height 107mm, length 167mm)
Multiple cards Yes, the card limit is only dependent on the resources available in the host Server
Network connections supported 4 synchronous ports, soft switchable line termination
RS232 (V.24, X.21bis) - DTE DB25M type connector,
X.21 (V.11) - DTE DB15M type connector,
V.35 - DTE M34M type connector,
RS530 (EIA530, RS422 ) - DTE DB25M type connector,
RS449 (RS422) - DTE DB37M type connector,
DCE type cables also available.
Link speed range RS232: 75 baud up to 128 Kbits/s
X.21, V.35, RS530, RS449, RS422: 75 baud to over 2.048 Mbits/s
Line Termination Line termination resistors can be configured in or out.
Terminal Timing Terminal Timing is supported to enable system-wide clock synchronisation.
ESD protection Yes, Littelfuse high speed ESD and over-voltage protection
LED line status indicators 4 line status
Approvals and Compliance EN55022 class B, CE, FCC class B, RoHS2, REACH2
Power requirements < 2.32 A @ +3.3v, 
< 1mA @ +12v (for ESD suppression)
< 7.7 watts.
Operating Temperature Range 0–50°C ambient air temperature. 
An industrial temperature range version is available on special order, contact us for details.
MTBF 165,256 hours calculated using Bellcore Method 1 Case 3, 40 deg.C ambient, 15 deg.C case temperature rise above ambient
Humidity Operating humidity 10 to 85% non condensing.
Line clocking - card generated

Internal clock range: over 160 different frequencies between 300 baud and 10 Mbits/s. 
No special cables are required to use internal clocks. Internal clocking is supported on RS530, RS232, X.21, V.35 and RS449 connections

Line clocking - line generated External clocks received from a serial port and used to a drive serial communication port can be any frequency up to 10MHz.
Cable type compatibility Cables are ordered separately, see the Cables section for details
Warranty 5 years free warranty.

Order Information
Product Name Description Product Code
FarSync X25 T4Ee Intelligent 4 port X.25 PCI Express card featuring many line signalling modes with X.25 Software and the X.25 Developers Toolkit for Windows and Linux included. FS6456
Software Options
FarSync X.25 High Capacity Pack for Windows Upgrade to the standard Windows FarSync X.25 software that allows up to 4095 simultaneous sessions FS9504
FarSync X.25 High Capacity Pack for Linux Upgrade to the standard Linux FarSync X.25 software that allows up to 4095 simultaneous sessions FS9505
FarSync XOT Extension An optional upgrade to add XOT (X.25 over TCP/IP) with FarSync X.25 cards on Linux.
A FarSync X25 card must be purchased with this product.
FS9508
FarSync XOT Runtime - Windows XOT (X.25 over TCP/IP) support on Windows FS9511
Cables for the FarSync X25 T4Ee
HCR4 HCR4 HCR4, Quad port RS530 and RS232 DTE cable DB25M connectors, 2.0 metres for use with FarSync X25 T4Ee cards, see pinouts.
Also supports X.21, V.35 and RS449 interfaces with addition of conversion cables TCX1, TCV1 and TC449 respectively,
FS6076
TCX1 TCX1 TCX1, X.21 DTE (V.11) DB15M 1 port HCR4 cable to X.21 transition connector, see pinouts FS6052
TCV1 TCV1 Cable TCV1, V.35 DTE M34M 1 port HCR4 cable to V.35 transition connector, see pinouts FS6053
TC449   TC449, RS449 DTE DB37M 1 port HCR4 cable to RS449 transition connector, see pinouts FS6054
Special Purpose Cables for all T-Series cards
Null-MX Null-MX X.21 double shielded crossover cable,
DB15F connector to DB15F connector, 0.5 metres.
Converts DTE presentation to DCE.
Suitable for FarSync T-Series cards, see pinouts
FS6090
X21-EXT X21-EXT X.21 double shielded 15 metre extension cable,
DB15F connector to DB15M connector.
FS6091
Null-MR4 Null-MR3 Combined RS530 (RS422, EIA 530) and RS232 (V.24) double shielded crossover cable,
DB25F connector to DB25F connector, 0.5 metres.
Converts DTE presentation to DCE.
Suitable for FarSync T-Series cards, see pinouts
FS6097

Microsoft, Windows, and the Windows logo are trademarks or registered trademarks of Microsoft Corporation in the United States and/or other countries.

All trademarks and registered trademarks are acknowledged.

Changes are periodically made to the information herein; these changes will be incorporated into new editions of the publication. FarSite Communications may make improvements and/or changes in the products and/or programs described in this publication at any time.

17-Jan-2017