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Important Notice!

Dear SDI Customers,

We regret to inform you that as of 9/26/2025, SDI USA has ceased all operations. Due to the lack of sufficient management structure and an aging workforce, we are no longer able to meet the high standard of support and service our customers deserve. As such, we have made the difficult decision to terminate our company's operation.

Licensed customers are authorized to continue using their licensed software products without further License or Maintenance and Technical Support fees. However, no Technical Support services will be available. The software products affected by this change include TN3270 Plus, SDI LPD, and any other software licensed by SDI USA in the past. There will be no future product updates, no new releases, and no new licenses. The products should continue to perform their intended function until changes to the operating environment make it incompatible with our products. Feel free to continue using the products for no cost until you decide to move to another supplier.

We intend to keep the sdisw.com website available, but unmonitored until 12/31/2026. We recommend that you download the installation files, user guides and sample files and keep them in a safe place for your future use before the web site closes down.

We have witnessed monumental changes in the computer software industry during the past fifty plus years and have enjoyed working with so many outstanding companies and wonderful people over those years. We wish you all a prosperous future.

SDI USA

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TN3270 Plus Prices

These are "per order" prices, not cumulative prices. So if you need 500 copies, it is less costly to order all 500 at once, in advance, than to place 5 separate orders for 100 copies each time.

It is also less costly to order all features at once, rather than add them on later.

These prices are only for purchase in advance of usage. Post-paid prices are computed at the single-user non-discounted price.

Use the price calculator below to complete the calculations for you. You must select at least one Terminal Emulation to compute a price.

Please refer to the License Agreement and the Maintenance and Technical Support Agreement for SDI's terms and conditions of use.

TN3270 Plus Price Calculator


Enter the number of copies required.
Check the features required
Telnet Base (A)
Terminal Emulations (select one or more)
3270 Terminal (T)
5250 Terminal (F)
VT/ANSI Terminal (V)

Optional Features
SSL (L)
SSH (H)
IPv6 (I)
Print (P)
FTP (C)
Full Package (ACFHILPTV)
 
One-time License price
Annual Maintenance Price (15% of purchase price or a minimum of $300)
Total Price

Placing Your Order

Visit our How to Order page for information on purchasing TN3270 Plus.

Version History

The TN3270 Plus Version History Page has a summary of the enhancements added to each release of TN3270 Plus. If you are interested in upgrading, please see our How to Order page or contact sales.

 

TN3270 Plus Price Bands


  PRICE PER ADDED COPY in US$
Feature (Code) Cost of first
99 copies		 Copies
100-
249		 Copies
250-
999		 Copies
1000-
9999		 Copies
10,000+
Telnet Base (A) $ $ $ $ $
Terminal Emulations (select one or more)
3270 Terminal (T) $ $ $ $ $
5250 Terminal (F) $ $ $ $ $
VT/ANSI Terminal (V) $ $ $ $ $
Optional Features
SSL (L) $ $ $ $ $
SSH (H) $ $ $ $ $
IPv6 (I) $ $ $ $ $
Print (P) $ $ $ $ $
FTP (C) $ $ $ $ $
Full Package
(ACFHILPTV)		 $ $ $ $ $

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