Real inventory that we refurbish and stand behind, since 1985.

Attention Dealers and Repeat customers:

Discounts may be available based on your log-in. Call or Email for information.

We hold a huge inventory and are in a position to present a fair market price. Other dealers compete against this, so:

Call the REAL source!

Want to use your own freight account for shipping? Please call so we can set it up for you.

BOS eTwinax TCP/IP Controller

  BOS eTwinax TCP/IP Controller 

4691 e-Twin@x Controller 1 device
4693 e-Twin@x Controller 3 device (2 port Y cable)
4608 e-Twin@x Controller 8 device (8 Port Twinax Brick)
4610 e-Twin@x Controller 14 device (2 port Y cable)
4616 e-Twin@x Controller 16 device (8 port Twinax Brick)
4628 e-Twin@x Controller 28 device (8 port Twinax Brick)
4656 e-Twin@x Controller 56 device (8 port Twinax Brick)
4612 e-Twin@x Controller 112 device (2 x 8 port Twinax Brick)

Integrated RJ45 Hub 4808 e-Twinstar Controller 8 device 8 RJ45 connectors $3,340
4816 e-Twinstar Controller 16 device 8 RJ45 connectors $3,880
4828 e-Twinstar Controller 28 device 8 RJ45 connectors $5,980
4856 e-Twinstar Controller 56 device 8 RJ45 connectors $8,080

4602 SECURIT-e + RAS 2 Port $450
4605 Dial Backup feature (requires 4602) $450
4600 Additional 8-Port Brick (Factory install only, 46xx series) $800
4800 16-Port RJ45 HUB (48xx series, factory install only, replaces base 8-port hub) $800

MCON ONE Year Warranty Extension - available at time of purchase only $395
MCON2 TWO Year Warranty Extension - available at time of purchase only $695

BOS eTwinax Controller

Move your Twinax network forward with the best state-of-the-art pure TCP/IP solution. The e-Twinax Controller leverages your investment in Twinax.
  • Supports all Twinax display stations, printers (both SCS and IPDS),and existing cabling.
  • Blazing Speed. Pure TCP/IP drives your Twinax or Twinax Ethernet network--easy to configure and maintain, and routable.
  • Eliminates SNA, AnyNet and MPTN traffic.
  • Easy setup. Hardware and software solution.Remote management via a Web browser, saving you valuable technical resources.
  • Unbeatable uptime and disaster recovery.The only Anynet alternative (MPTN) with pure TCP/IP.
IPDS Printing on Twinax via TCP/IP

Tests show that IPDS printing takes one third the number of TCP/IP packets to print the same document via native TCP/IP than via SNA. Imagine the performance improvement by moving a 56K frame relay circuit supporting a number of IPDS printers using SNA to TCP/IP with an e-Twinax Controller!

Our easy to install Twinax controller improves performance of your twinax network while protecting your investment. The controller supports all Twinax display stations, SCS and IPDS printers, and existing cabling.

Anynet (MPTN) vs TCP/IP: Pros & Cons

Problems with Areas Anynet (MPTN)
As users started to use Anynet, flaws began to appear, particularly when large amounts of data needed to be transported. Typical problems included disconnecting sessions and slow performance. These problems were not readily apparent on local networks; they were much more prevalent when the timing between the host and device is delayed. In recent tests we tried to establish a connection across the Internet. We were able to get a session started using a PC with the NS/Router, however within three minutes of working with this session it disconnected. We also tried connecting with a remote controller, which used the same protocol. We were able to vary on the controller, however the terminals on the controller never established a connection.

TCP/IP Makes its Entrance
In recent years IBM has focused their development on TN5250. With the arrival of V4R2 (and later PTFs to support older versions) IBM supported TN5250e and TN3270e. This enhanced TCP/IP support enabled the AS/400 and 3270 hosts to support device naming and SCS printer support. For the first time, users could really take advantage of native TCP/IP support on these hosts. IPDS was also supported directly with TCP/IP using PPD/PPR (a special protocol developed for this specific purpose). Recent versions of Client Access (Client Access Express) contain support for native TCP/IP only, providing proof that IBM's direction is to provide better support for native TCP/IP on these host computers.

Advantages of TCP/IP over Anynet (MPTN)
Because TN5250 and TN3270 use native support on the system, they do not require as many CPU cycles to make use of it. TN5250e and TN3270e do not have the timing limitations that SNA has, therefore these protocols can be used over the Internet with no problem. IBM has realized this and that is one of the reasons that Client Access Express supports SSL encryption, to enable users who want to connect using the Internet a way to do so without encountering security issues. Recent tests show that IPDS printing takes three times the number of TCP/IP packets to print the same document via SNA than via native TCP/IP. Imagine the effect on the performance of a 56K frame relay circuit supporting a number of IPDS printers using SNA!

IBM 5494 Controller has been Withdrawn
The IBM 5494 Controller was discontinued at the end of 1999, and now both Perle and NLynx are developing TN5250 controllers of their own. BOScom clearly leads the field with its e-Twin@x Controller, since it uses the same TCP/IP protocol as the very stable and field-tested BOSâNOVA TCP/IP TN5250e emulator, which has been installed and working on hundreds of thousands PCs since 1997. For experience and state-of-the-art technology, choose BOScom.

Overview of e-Twinax ControllerThe e-Twin@x Controller is the only SNA-free, pure TCP/IP Controller in existence. It moves your twinax network forward in 5 important ways:
  • Leverage your investment in Twinax by supporting all Twinax display stations and printers (both SCS and IPDS), as well as existing cabling with the e-Twinax Controller.
  • Increase network speed with pure TCP/IP protocol--all SNA, AnyNet and MPTN traffic is eliminated when used as a remote Controller.
  • Easy setup and maintainance--supports remote management via a Web browser, saving you valuable technical resources.
  • Is routable
  • High uptime and disaster recovery.

  • Advantages
    • Replaces SNA connectivity and Anynet protocol with simple, easy-to-configure TN5250e TCP/IP
    • Serves as a secure, low cost connection from your remote branches to the AS/400 using the Internet, saving a fortune in leased line expenses
    • Includes a built-in 2- or 6-port* Remote Access Server (RAS), complete with AS/400 client RAS software, built-in firewall and support for RADIUS standards
    • Housed in a compact 1 U communications Controller that fits into standard 19" rack-mount communications cabinets
    • Provides IP over Twinax connection to a local or remote AS/400, allowing Twinax-attached PCs to benefit from IP applications such as e-Mail, Web browsers and Microsoft Networking, while running up to 5 times faster when used with BOS IP over Twinax drivers
    • Supports up to 112 Twinax devices; upgrades to expand the number of devices supported from 8 up to 56, are software-based and can be applied either on-site or remotely, via the Internet
    • Provides an interface to Citrix Metaframe supporting Twinax technology or other corporate intranet computing for PCs using IP over Twinax
    * Optional

    Secure, Reliable, Low Cost Connection using the Internet
    When the traditional SDLC connection is replaced with a Wide Area Network (WAN) connection using TCP/IP, the e-Twin@x Controller can be used to maintain legacy Twinax devices (such as high-speed printers and dumb terminals) at your remote sites. In this configuration, all the devices will appear on the AS/400 as TN5250 devices, and all PC devices can connect to the AS/400 either by using dumb terminal emulation or by installing the e-Twin@x version of BOSANOVA TCP/IP or IBM TCP/IP drivers to connect to the AS/400 over TCP/IP.

    Secure connection via the Internet using modem(s) for a mixed Twinax and LAN environment
    The e-Twin@x Controller can be connected to the AS/400 via the Internet, saving you a fortune in leased line expenses. Requirements are minimal:

    • Local site: a fixed connection to the Internet and BOS' Java-based SECURIT-e ServerTM, which can be run on the AS/400, and any PC or Mini Computer with a Windows, Unix-based or Linux operating system.
    • Remote site: a connection to the Internet, either via a dial up account or using a leased line to a local ISP.
    5250 traffic, encrypted via industry-standard algorithms, flows from the Controller to the Java-based server, where the data is deciphered and sent to the AS/400. The e-Twin@x Controller can initiate the dial-up to the Internet when the first user tries to access the AS/400. It also supports two parallel connections to two different ISPs, allowing increased bandwidth, speed and reliability.

    Configuration and Maintenance with Ease
    The e-Twin@x Controller is managed via a standard Web browser, which enables all of the units to be managed from a central point anywhere on the network, or via a modem dialed in to the RAS. Configuration can also be done using a dumb terminal attached to any of the ports. The Controller software can also be updated over the network or via dial-in. Terminals, PCs or printers can be added to the Controller very simply using a plug-and-play feature in Auto mode. The device name can be changed at any time, without restarting the Controller. The Controller also verifies the host connection, including which PTFs are installed for each OS version.

    Configuration and management can be done via standard Web browser from anywhere on the network
    e-Twin@x Controller as an IP Gateway

    The e-Twin@x Controller connects to the network using a standard network hub, which is attached to the local office via a standard IP router. Ethernet PCs can be connected to the same network hub as the Controller for mixed Ethernet and Twinax infrastructures.

    With the TCP/IP drivers loaded on the PC, the user can take full advantage of the WAN, and get:

    • Support for e-Mail
    • Printer and file sharing on the network
    • Ability to access and run Intranet applications
    • Implementation of server-centric computing such as Citrix Metaframe.
    The e-Twin@x Controller as an IP gateway with enabled RAS feature.
    Overcome Network Instability and Printing Problems

    Dial Backup*

    The Dial Backup feature ensures improved uptime for Controllers that are connected to an AS/400 using a LAN connection (via the Internet routers or a separate Frame Relay network). If the LAN connection fails, the Dial Backup provides (via an attached modem) an additional method to connect to the AS/400. Two configurations are available: Always, which provides a simultaneous connection at all times; and "On LAN Failure, which causes the Controller to activate the modem connection only when LAN connectivity failure is detected.

    * Optional

    Automatic Session Recovery

    In the event that a router on a frame-relay network disconnects and then re-connects, users of remote Twinax-attached devices can choose to resume their current session. The e-Twin@x Controller can be set to automatically recover the session, within a user-defined time period, ensuring smooth and efficient operations even in cases of network instability.

    Customized Object for Specialty Printers

    The e-Twin@x Controller supports a wide variety of Twinax printers, including label and barcode printers that are often called upon to deal with special printing requirements such as oversized fonts, graphics, and unusual page sizes. A parameter can be set to instruct the host to send a pure data stream through the e-Twin@x Controller, allowing it to override the original complex formatting commands with simplified commands that are supported by most printer models, before releasing the job to the destination printer.

    e-TwinSt@r Series Reduces Need for Need for Active Star Hubs

    The e-TwinSt@r Series Controller includes a built-in unit featuring 8 (or 16) RJ45 sockets. Twinax devices working over CAT5 lines are connected directly to the Controller, saving the cost of an active star hub and eliminating the need for power sources and additional space in the communications closet, as well as the extra set-up and maintenance time.

    E-mail on Dumb Twinax Terminals*

    Basic e-mail functionality, known as TwinMailTM, is supported on dumb Twinax terminals. In addition to sending and receiving e-mail, TwinMail includes a personal address book that can be organized according to user-defined preferences.

    * Optional

    PC Remote Access
    The e-Twin@x Controller supports a 2- or 6-port* Remote Access Server (RAS), providing remote PC users with network access in addition to AS/400 access. Remote users can dial in to the e-Twin@x Controller and gain access to the network using the RAS. This RAS includes a firewall for restricting access per user to specific IP devices or ports (e.g. one group of users may be allowed access to the AS/400 for display emulation, but not file transfer). The RAS also automatically logs all remote access activity. The RAS component can use the services of any RADIUS server for authentication, if required.

    * Optional