San Jose, California-based fault-tolerant Unix systems builder Tolerant Systems Corp has taken another significant step in its plans to build up an international presence for its machines by signing an exclusive five year, $12m agreement with Lionel Singer Corp Pty of North Sydney, Australia. Singer, which has a long-standing involvement in the Unix market Down Under – it already has deals with Pyramid Technology, Convex Computer, Sun Microsystems, Bridge Communications, and Sytek among others – is following its usual policy of forming a new subsidiary to handle the products from each supplier. The newly formed Tolerant Systems Australia Pty sees the distributed architecture and communications capabilities of the machines as particularly suitable for the growing telecommunications market in Australia. It also hopes the transaction processing capabilities of the machines will take them into vertical markets requiring high volume online database applications. Tolerant, which recently set up a European subsidiary in the UK in Slough, Berkshire, already has distribution agreements with Metrologie of France and Everdata international in Taiwan; it also has technology exchange agreements with Bull of France and RC Computer in Denmark.