HAYES MICROCOMPUTER PRODUCTS, INC.
P.O. Box 105203
Atlanta, Georgia  30348
Press Inquiries: 404/840-9200
Customer Service:  404/441-1617
Fax: 404/441-1238       
Beth Logan/Peggy Ballard        

ROCKWELL INTERNATIONAL CORP.
Digital Communications Division
M/S 501-300, D/727
4311 Jamboree Road
Newport Beach, California  92658
Press Inquiries: 714/833-6849
Fax: 714/833-6399                                  FOR IMMEDIATE RELEASE
Eileen Algaze                                           H-1392+++AT


HAYES AND ROCKWELL REACH AGREEMENT ON SUPPORT FOR INDUSTRY STANDARD 
                            ESCAPE SEQUENCE

     ATLANTA, GA, 1 June 1992 -- Hayes Microcomputer Products, Inc., the 
global leader in the personal computer communications market, and Rockwell 
International Corp., the world's largest modem semiconductor manufacturer, 
today announced a licensing agreement permitting Rockwell to incorporate the 
Hayes Escape Sequence With Guard Time Patent, also known as the Heatherington 
'302 Patent, into its modem chip sets.  Under the agreement, Rockwell has 
taken a license that will benefit its modem chip set customers worldwide.  
This agreement addresses both past and future obligations of those customers 
to Hayes under the Hayes '302 Patent.

     The Hayes escape sequence technology, first introduced in Hayes 
Smartmodem products in 1981 and issued as U.S. Patent Number 4,549,302 on 25 
October 1985, is now a data communications feature acknowledged as an 
industry standard for modems, ISDN and other data communications 
applications, with over 26 million units shipped to date worldwide.  Hayes 
holds corresponding patents to the Hayes '302 Patent in Canada (#1,186,080), 
France (#E0067395), Germany (#P3279750.8-08), Italy (#21810BE/89), and the 
United Kingdom (#GB0067395), including registration of the United Kingdom 
patent in Hong Kong.  

     According to Dwight Decker, Vice President and Business Director of 
Rockwell's Modem Systems, and Dennis Hayes, President of Hayes Microcomputer 
Products, Inc., the Hayes/Rockwell agreement permits modem makers who 
purchase modem chip sets from Rockwell to implement the Hayes patented Escape 
Sequence With Guard Time and avoid concerns over installed-base 
incompatibilities and unsatisfactory performance results caused by 
alternative escape mechanisms.

     "When a major corporation like Rockwell comes to the table and obtains 
the use of this patent, it further confirms the importance of this technology 
to the industry," said Dennis C. Hayes.  "By licensing Rockwell, Hayes makes 
it easy for all modem manufacturers to use this standard technology."

     "This is not simply an intellectual property rights matter," said 
Decker.  "Rather it's an acknowledgment of industry standards and practices, 
and Rockwell's support for such standards.  Our business charter is to enable 
our customers to build the very best products, and this agreement is just 
another step toward that goal."

     Best known as the leader in microcomputer modems, Hayes develops, 
supplies and supports computer communications equipment and software for 
personal computer and computer communications networks.  The company 
distributes its products in over 60 countries through a global network of 
authorized distributors, dealers, VARs, systems integrators and original 
equipment manufacturers.

     A leader in modem technology for more than 30 years and a major 
supplier to computer and data communications OEMs worldwide, Rockwell 
International's Digital Communications Division is headquartered in Newport 
Beach, California.  

     Rockwell International is a multi-industry company applying advanced 
technology to a wide range of products in electronics, aerospace, automotive 
and graphics businesses.

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