HS X.25 is a useful software library in C (supplied with full source code) that implements ITU-T recommendation X.25 - Interface between Data Terminal Equipment (DTE) and Data Circuit-terminating Equipment (DCE) for terminals operating in the packet mode and connected to public data networks by dedicated circuit.
HS X.25 internally at a lower layer interfaces to HsDL library. HsDL library is Data Link layer abstraction. When HS X.25 is ported into environment with LAPB or LAPD as data link layer, only HsDL module needs to change.
HsDL links directly to HsSock module (also included in this package) - Winsock interface component that provides reliable TCP transport services similar to LAPB / LAPD / HDLC.
HsX25 as provided to customer may be used immediately in X.25 over TCP (XOT) solution or it may be used with traditional LAPB or LAPD in which case only HsDL will need to be modified.
HsX25 as provided to customer may be used immediately in X.25 over TCP (XOT) solution or it may be used with traditional LAPB or LAPD in which case only HsDL will need to be modified.
What's New in This Release:
· Added a return code - HS_X25_RC_DL_LIS_QFULL that is different from HS_X25_RC_DL_LIS_FAIL. HS_X25_RC_DL_LIS_QFULL is now returned by HsX25Listen() when the listen queue is full. This allows to differenciate real data link failure from queue full situation - that is not a failure