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FarSync WAN T-Series PCI cards (X.21, V.35, RS-530, RS232) for Windows

The highly versatile FarSync WAN T-Series PCI / PCI-X synchronous communication card products provide high speed connectivity to a wide variety of communications networks including leased lines, the Internet and satellite systems. The products are supported on Windows XP, 2000, Server 2003 and Linux

FarSync WAN cards - validated by Microsoft as Designed for Windows XP
Download the product datasheet in Acrobat PDF format here.
FarSync WAN T-Series cards, datasheet for the synchronous X.21 / V.35 / RS-530 productsGet Reader


The versatile, intelligent FarSync WAN T-Series cards provide up to 10 Mbits/s WAN solutions for your X.21, RS-530 and V.35 connectivity requirements. Whether you are connecting to the Internet, a satellite link, a private network using TCP/IP or connecting sites using leased lines. FarSync provides the connectivity solution.

The card installs seamlessly as a plug and play device under Windows 2000, XP or Server 2003 on both single and multiprocessor systems. The interface to the cards are presented as an NDIS (LAN) driver with TCP/IP running over PPP with optional authentication by CHAP or PAP (RFC 1334). Multiple adapters can be installed to create a very low cost high speed Wide Area Network (WAN) hub using 12 or more cards (48+ ports). FarSync WAN drivers have been validated by Microsoft as 'Designed for Windows XP'.

The product is supplied with its own multi-channel Line Monitor utility.

The FarSync WAN T-Series cards support PC connections to secure BRENT units using X.21.

The FarSync WAN products are also supplied with drivers for Linux, see WAN cards for Linux for further information for features under Linux.

For developers who need an API to access the HDLC or Bitstream support on the card directly, the FarSync OEM product range should be used instead. The FarSync OEM range includes a Developers Toolkit that supports application development using the adapter's API. See FarSync OEM cards for further details.

For connections to E1 or T1 lines see the FarSync WAN TE1 E1/T1 card.


Typical Applications for X.21/V.35/RS530 adapters

The FarSync T-Series X21 / V35 / EIA530 cards are suitable for connection to TCP/IP networks. Typical applications include:

  • High speed Internet access
  • Remote office access over leased lines
  • PC-based multi-port wide area network hub (Routers and Firewalls)
  • Video Conferencing
  • Satellite Multicasting
  • Connections over secure lines using BRENT

Multiple Cards

A large number of lines can be supported by the installation of multiple FarSync T1U, T2U, T4U cards in a Server. Each line appears as a separate NDIS (LAN) connection. Rack mounted Servers can support 12 or more cards (48+ ports) utilising more than one PCI bus, the card limit is only dependent on the resources available in the host server.

High Performance

The T-Series intelligent cards have been designed for high performance and flexibility. The cards are driven by an AMD processor with on board zero wait state SRAM memory. The PCI Bus mastering DMA interface provides a very high performance interface to the card whilst minimising PCI and PC CPU loads.

PC/Server and PCI/PCI-X Bus Compatibility

The FarSync WAN T1U, T2U and T4U cards are PCI version 2.2 compliant and PCI-X compatible, these Universal PCI adapters can operate in PCs and Servers using either 3.3 volt or 5 volt signaling. The cards are suitable for systems with either 32 bit bus or 64 bit bus configurations and with single, HyperThreading or multiple processors. The power for the card is taken from the 3.3 volt supply rail.

Installation and Configuration

Easy installation and fast configuration are features of the product, on-line help and documentation is provided. T-Series cards are 'plug-and-play' compatible supporting Windows XP, 2000 and Server 2003. The NDIS (LAN) interface allows each line to appear like a LAN port, this means that all the configuration complexities are hidden, making for a very quick installation. The FarSync WAN drivers have been tested and validated by Microsoft as 'designed for Windows XP'.

Line Monitor and Diagnostics

The FarSync product is supplied with a high performance multi-channel line monitor that allows the user to record, display and store line traffic with full WAN protocol decoding, click here for a sample screen. Comments can even be inserted into the line trace to assist later analysis.     Click for a larger Line Monitor Image


There are a number of different cable and connector configurations available. The FarSync WAN T-Series product range table lists the cables available by card type .  Crossover cables, sometimes referred to as null modem cables are also detailed. These allow the cards to present a full DCE interface as well as allowing the adapters to be linked in a back-to-back configuration for test purposes.


FarSync WAN T1U and FarSync WAN T2U

These one and two port cards have separate high-density D type connector for each port on the card. Cables supporting X.21 (V.11 / RS422), V.35, RS530 (EIA530), and RS232C (V.24 / X.21bis) are available plus RS449 via X.21 conversion cables.

FarSync WAN T4U

This four port cards uses a single large high-density D type connector on the card with all four lines available though this connector. The quad port cables splits out the four network interfaces into separate network connectors. Cables supporting X.21 (V.11 / RS422), V.35, RS530 (EIA530), and RS232C (V.24 / X.21bis) are available plus RS449 via X.21 conversion cables.

Product Packaging

The product includes the complete set of software drivers for Windows and Linux, the line monitor software, documentation supplied on CD-ROM, a quick start guide and the communications card. The cables are purchased separately, see the Product Range for details. New versions of the software are available for free download as they are released.


Hardware Technical Specifications
Product Name
FarSync WAN T1U
FarSync WAN T2U
FarSync WAN T4U
Product Code
5 years
5 years
5 years
Port Count
1 port
2 ports
4 ports
Available RoHS early 2007
Available RoHS compliant
Available RoHS compliant
Hardware Features
Card type /
PCI specification
AMD Processor with 1 Mbyte zero wait state SRAM,
Intelligent Universal bus mastering PCI card,
Short card (height 107mm, length 167mm),
PCI-X compatible,
PCI v2.2 compliant,

Supports 3.3 & 5 volt signaling,
Suitable for 32 and 64 bit PCI bus slots
Network connectors

X.21 (V.11, RS422) - 15 pin male D type,
V.35 - MRAC-34 male 'brick' type ,
RS232C (V.24, X.21bis) - 25 pin male D type,
RS530 - 25 pin male D type,
RS449 can be supported through converter cables
Note: The FarSync WAN TE1 card provides E1 and T1 (G.703 and G.704) connections

Link speed range
RS232C: up to 128 Kbits/s
X21, V35, RS530: up to 10 Mbits/s
ESD protection
Yes, Littelfuse high speed ESD and over-voltage protection
Multiple cards in a PC
Yes,  4 or more
Yes,  4 or more
Yes,  4 or more
LED line status indicators
1 line status
2 line status
4 line status
EN55022 class B, CE, FCC class B, Designed for Windows XP
EN55022 class B, CE, FCC class B, Designed for Windows XP
EN55022 class B, CE, FCC class B
Designed for Windows XP
Power requirements
850mA @ +3.3 V
< 5 mA @ +/-12 V
(ESD suppression)
2.8 watts max
< 1.2 Amp @ +3.3V
< 5 mA @ +/-12V
(ESD suppression)
< 4 watts max
< 1.75 Amp @ +3.3V
< 10 mA @ +/-12V
(ESD suppression)
< 6 watts max
265,965 hours 1
233,833 hours 1
187,427 hours 1
1 Bellcore Method 1 Case 3, 40 deg.C ambient, 15 deg.C case temperature rise above ambient
Line clocking
External only
Both, all ports selectable.
Internal clock range
9,600 baud to 8Mbits/s. 2
Both, all ports selectable.
Internal clock range 9,600 baud to 8Mbits/s. 2

2 No special cables are required to use internal clocks for RS232C and X.21. For V.35 internal clock generation the UX35C DCE cable should be used. Internal clocking is not supported for RS530.

Cable type compatibility
Cables are ordered separately see the FarSync WAN T-Series product range and compatible cables table lists the cables available by card type
RoHS Compliance

Software Technical Specifications
Standard interfaces
NDIS (LAN), each line appears as a LAN port
TCP/IP, over PPP, with CHAP or PAP authentication (RFCs 1661, 1332, 1334)
Plug and Play
Yes for Windows XP, Windows 2000 and Windows Server 2003
Multi channel line monitor to record, display and store line traffic included
Multiple cards
Yes, up to 12 or more in a Server, only limited by PCI slots, 1, 2 and 4 port adapters can be intermixed
Applications tested and supported
Microsoft's Netmeeting
FarSite's FarSync TCP-X25 GP Gateway, FarSync TCP-X25 POS Gateway and FarSync TCP-X25 SMS Router
On-line manual
Full installation and configuration instructions included
Operating systems supported
Windows XP,
Windows 2000,
Windows Server 2003,
windows 64 bit O/S support available late 2006,
Linux - see details on operation of the FarSync WAN cards on Linux


Information in this document is subject to change without notice.
Microsoft, Windows, and the Windows logo are trademarks or registered trademarks of Microsoft Corporation in the United States and/or other countries.
Other products and companies referred to herein are trademarks or registered trademarks of their respective companies or mark holders.


Last updated: 21-Oct-2007