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IBM INTRODUCES A BROADER RANGE OF WIRING CHOICES FOR CONNECTING P.C. IN HIGH-SPEED, LOCAL NETWORKS

 IBM INTRODUCES A BROADER RANGE OF WIRING CHOICES FOR
 CONNECTING P.C. IN HIGH-SPEED, LOCAL NETWORKS
 WHITE PLAINS, N.Y., April 21 /PRNewswire/ -- IBM Corporation (NYSE: IBM) today announced new products that can reduce costs for customers with high-speed PC networks -- by allowing a choice of wiring similar to that commonly used for telephones. The savings to customers utilizing this enhanced unshielded twisted-pair (UTP) wiring can be dramatic: the cabling itself is easier to install and somewhat less expensive than other types used for data, and the new options will allow many customers to capitalize on existing wiring in their buildings without new installation costs.
 In a related announcement last November with the SynOptics Corporation, IBM stated its intention to pursue new technologies to prevent the signal distortion that previously precluded UTP from being a feasible and reliable choice for its customers.
 The new cabling products support IBM's Token-Ring local area network (LAN) products, which provide industry-leading solutions for connecting PCs and workstations for sharing resources such as applications, print capabilities, data and other types of network services. IBM Token-Ring can run at two speeds: four megabits per second and 16 megabits per second.
 Four-megabit speeds for unshielded twisted-pair cabling has been supported by IBM for several years, but UTP for 16-megabit Token-Ring transmission is much more difficult to achieve because signal distortion and interference increases exponentially at higher speeds.
 Through this announcement, IBM is making major enhancements to the 8230 Controlled Access Unit. The 8230 is an intelligent wiring hub that allows connection for up to 80 devices in a Token-Ring network. It also provides network management functions -- such as the automatic bypassing and recovery of faulty Token-Ring adapters. Some of the products announced today provide UTP support for the 8228 Multi-Station Access Unit, a passive wiring hub without management function or "intelligence."
 Product Detail
 Today's announcement introduces 8230 Token-Ring Network Controlled Access Unit Model 2 -- with a 16/4 Unshielded Media Lobe Attachment Module. It also introduces filters that can support the Model 2 and that can enable, as well, customers with the existing 8230 Model 1 to have unshielded twisted pair support at 16 megabits per second.
 The 8230 Model 2 can support unshielded twisted-pair wiring categories 3, 4 and 5. Model 1 with filters can support UTP categories 4 and 5 -- with category 5 being the highest grade or quality. For environments requiring more industrial strength cabling support, IBM continues to recommend shielded twisted-pair cabling -- which will also be usable for technologies enabling transmissions of up to 100 megabits per second. For long-term investment and finest quality transmission, IBM recommends fiber, which is also supported by its Token-Ring LANs.
 In addition to the 16/4 Unshielded Media Lobe Attachment Module, the five filters announced today are:
 For the 8230s:
 -- the 16/4 workstation filter for attachment to each Token-Ring device;
 -- the 16/4 8230 unshielded media filter for attachment to each 8230 base unit; and
 -- the 16/4 lobe filter B for attachment to each 8230 port.
 For LANs which include 8228s or 8220s:
 -- the 16/4 repeater unshielded media filter for attachment between the 8230 and each 8228; and
 -- the 16/4 lobe filter A for attachment to each 8228 port.
 -0- 4/21/92
 /CONTACT: Dennis Drogseth of IBM, 914-642-5474/
 (IBM) CO: International Business Machines Corp. ST: New York IN: CPR SU:


GK -- NY023 -- 0436 04/21/92 09:31 EDT
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Copyright 1992 Gale, Cengage Learning. All rights reserved.

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Publication:PR Newswire
Date:Apr 21, 1992
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