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Bisync Protocol Developer's Tool Kit (BSCLib) BSCLIB - Developer's Tool Kit

Bisync Protocol Developer's Tool Kit

Supporting Windows, Linux, AIX and Solaris Platforms Featuring Both Point-to-Point and Multi-Point Bisync Emulation

BSCLIB is a software tool kit used to create customized application programs with embedded support for either the point-to-point Binary Synchronous Communications protocol specific to IBM 3780 and 2780 data terminals, or the multi-point version often required by 3270 terminals and other devices. This IBM protocol is also known as bisync or, simply, BSC. The tool kit provides a record-oriented Application Programming Interface (API) that works with many popular programming languages including Visual BASIC, C, C++, Java, and COBOL on Windows PCs and many Unix platforms.

BSCLIB Applications

BSCLIB can be used to create data collection and distribution systems that connect a PC with your customers, suppliers, plants, store locations, or other remote sites which utilize the BSC protocol. BSCLIB applications include accessing Electronic Data Interchange (EDI) mailboxes, creating PC-based VTAM and JES replacement systems, point-of-sale (POS) data collection, ATM machine connectivity, and other transaction-oriented BSC applications.

Application Programming Interface (API)

The tool kit's API provides a straight-forward means of controlling the information flow between your application and a BSC communications link. This allows you to incorporate integrated, customized communication sessions that are totally transparent to end-users of your application.

With BSCLIB, accessing a BSC communications link is similar to record-oriented sequential file I/O. Your application opens a link, reads or writes fixed- or variable-length records, and closes the link. In most cases, your application is shielded from bisync protocol details by BSCLIB's high-level API. If lower-level control is needed, BSCLIB provides more advanced access to your application.

Software Development Kit vs. Run-Time Library

BSCLIB is available as both a Software Developer's Kit (SDK) and as a Run-Time (RT) package. Reusable sample code is provided with the BSCLIB SDK. One SDK license is required to develop your application. A separate Run-Time license is required for each instance of your application put into service.

Standard vs. AutoSync Versions

The BSCLIB is available in two single-port versions. The Standard version includes both BSCLIB emulation software and a synchronous adapter. This version is intended for the following environments:
  • An existing modem is to be used
  • Leased line or direct connection via modem eliminator is to be used
  • A Bell compatible 201 (2400 bps) or 208 (4800 bps) modem is required
The AutoSync version does not require the use of the synchronous adapter, but does require a specific modem -- namely a Hayes Optima 336 or 56K Business Modem. The AutoSync version uses a standard COM port connected to the Optima modem for dial-up, 9600 bps (or faster) connections to a host computer. The host must support V.32/V.34 modems over dial-up phone lines if you wish use the AutoSync version of BSCLIB.

Multi-Port Version

The multi-port version of BSCLIB utilizes up to four SyncPCI adapters or the 8-port SmartSync/DCP multi-port communications co-processor adapter when more than one simultaneous BSC connection is desired from a single PC. Multiple SmartSync/DCP adapters are supported if more than eight connections are required.

More details about BSCLib Features and Requirements.

  More Info...

  BSCLIB Specs

  Data Sheet (PDF)



  Technical Support

  Sample Code

  API Functions

  API Control Block


  What is Bisync?

  See a 3780 Terminal

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