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Tandem Computers Inc’s Ungermann-Bass Inc has announced its intention to release 16Mbps token ring products operating over unshielded twisted pair wiring. The offerings will be compatible with British Telecommunications Plc’s Open System Cabling Architecture structured cabling portfolio, AT&T Co’s Premises Distribution System and IBM’s unshielded twisted pair Type 3 specification. Ungermann-Bass said it will deliver the products in 1990, via its Access-One product, a networking system that encloses network hardware and software modules in a telecommunications wiring closet. There has been a leap in the number of Token Ring local area networks installed over the past 12 months, and the system is beginning to challenge Ethernet for market supremacy, with the availability of the 16Mbps version which tops the 10Mbps speed of Ethernet – increasing interest, especially as token passing tends to let more traffic get through than Carrier Sense Multiple Access with Collision Detection on heavily loaded networks.

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