INDEPENDENT ACCOUNTANT'S CONSENT
 
The Directors and Shareholders of
Corcom, Inc.
 
  We agree to the inclusion by reference in this Proxy Statement of our report
dated February 27, 1998 and our audit of the consolidated financial statements
of Corcom, Inc. and to the reference to our firm under the heading
"Independent Public Accountants."
 
                                          /s/ Coopers & Lybrand L.L.P.
 
Chicago, Illinois
March 25, 1998