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Wanware® Linux - X.25 Solutions

Adapters | Drivers | Tools | Additional Info

Linux Penguin - TuxX.25 Connections

  • Full program control over link state and parameters, as well as switched or permanent virtual circuits

  • X.25 and X.32 (dial-up) links supported

  • V.25 bis HDLC dialing protocol for X.32 operation

  • BX.25 options support Bellcore TR3.85 switch data collection protocols

X.25 Overview

X.25 network links are a robust connection between systems, with or without an intervening public network. Suitable for noisy communication environments or connecting to legacy communications equipment, X.25 (and its telephony-oriented cousin, BX.25) provides reliable worldwide communications through public common carrier data networks.

Wanware Linux for X.25 Overview

Wanware Linux provides system developers with full control over X.25, Switched Virtual Circuits, Permanent Virtual Circuits, and HDLC links, using x25lib, the X.25 application programmer interface library. In addition to controlling data exchange with other systems, Wanware Linux contains a network management library which allows developers to query link status and other communications operation statistics at any time, and to reconfigure data links dynamically.


Wanware Linux is supported on the SGP hardware platform. SGP is a high-performance bus mastering adapter, running at up to 4Mb/second per link, and available for both the 5 volt and 3.3 volt PCI buses.


Wanware Linux software contains a full-featured implementation of the X.25 protocol, enhanced by control options for dialup (X.32) and BX.25 (TR3.85) operation. The API allows protocol control down to optional fields in both data and control packets, allowing Wanware Linux to perform as a base protocol for IBM's Qualified Logical Link Control, or providing the lowest three layers of the OSI CONS (Connection-Oriented Network Services) protocol.

Wanware Linux has a table-driven Incoming Call handler which examines each incoming call packet for certain parameters (address, Call User Data, facilities fields) and dispatches an appropriate process to handle it. The default handler enhances security by clearing calls from unknown locations or with unrecognized password strings in Call User Data fields. Customers can replace the default handler with a custom-built one if necessary.

Other Wanware Linux Protocols