In a bid to capture a slice of the US Integrated Services Digital Network market, Edinburgh, Scotland-based Spider Software Ltd has announced SpiderISDN 3.0, a portable Streams-based implementation of the ISDN protocol suite which is said to support National ISDN in the US. The offering is aimed at OEM customers wanting to provide ISDN access within devices such as multiprotocol routers, bridges, intelligent hubs and communication servers, says the company, and will be sold under licence agreement to OEM customers and systems integrators. According to Spider, a unit of privately-held Spider Systems Ltd, SpiderISDN runs in a Unix System V.3/4 Streams environment, or under SpiderStreams, the company’s Streams emulator. It is said to implement ISDN layers 2 and 3 as per the Consultative Committee on International Telegraphy & Telephony’s 1988 recommendations, with layer 3 conforming to Q.930/Q.931, and layer 2 to Q.920/Q.921 of the committee’s standards. The product comes with a layer 3 Applications Programming Interface, while layer 2 supports AT&T Corp’s Data Link Provider Interface standard. A Local Management Interface, which enables configuration and retrieval of both layer 2 and 3 parameters and information, is also provided. Other features of the release include addition of Primary Rate Interface access and support for both X.25 and TCP/IP over ISDN. The product can now support ISDN service in the UK, France, Germany and the US, as well as EuroISDN, says Spider. Release 3.0 is available for evaluation this month. A source code licence will cost $40,000.
