

  =========================================================================
                      D R C ' S   D I R E C T O R Y   O F

            T E L E C O M M U N I C A T I O N S   C O M P A N I E S

                             M A R C H ,  1 9 9 1
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   This is a continuously updated directory that now contains current names,
   addresses, phone numbers, and principal officers for over 1OO US publicly
   held companies in the telecommunications industry.  This is a shareware
   product updated and distributed monthly by Demand Research Corporation.

   The information contained herein is obtained from sources believed to
   be reliable, but Demand Research is not responsible for any errors or
   omissions.  All rights are reserved.

   Demand Research Corporation is pleased to make this information freely
   available without charge.  Demand Research also publishes

        THE EXECUTIVE DESK REGISTER OF PUBLICLY HELD CORPORATIONS,

   a directory of ALL of the approximately 5,OOO domestic corporations
   and financial institutions currently trading on the New York Stock
   Exchange, the American Stock Exchange, and the NASDAQ National Market
   System.  The Executive Desk Register features:

                       ** Full company name
                       ** Street address
                       ** City, state, & zip code
                       ** Telephone number
                       ** Fax number where available
                       ** Ticker symbol
                       ** Exchange affiliation
                       ** Chief Executive Officer
                       ** Chief Financial Officer
                       ** Industry classification

   The data in the Executive Desk Register is updated daily and can
   be ordered on IBM PC diskettes in flat ASCII, comma-delimited ASCII,
   DBase III+, or Lotus 1-2-3.  The cost is $59.95.  There is no charge
   for postage or handling, and there is no charge for sales tax.  All
   orders are shipped within 24 hours of receipt.

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                       Demand Research Corporation
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                      D R C ' S   D I R E C T O R Y   O F

            T E L E C O M M U N I C A T I O N S   C O M P A N I E S

                             M A R C H ,  1 9 9 1
  =========================================================================


  ACC Corp.  39 State St.
      Rochester, NY 14614  716-987-3000  ACCC  NASDAQ
      CEO: Mr. Richard T. Aab  CFO: Mr. Stephen J. Paris
      Industry: Telecommunications services

  ADC Telecommunications, Inc.  5501 Green Valley Dr.
      Bloomington, MN 55437  612-835-6800  ADCT  NASDAQ
      CEO: Mr. Charles M. Denny, Jr.  CFO: Mr. LeRoy J. Morgan
      Industry: Telecommunications equipment

  AIM Telephones, Inc.  299 Webro Rd.
      Parsippany, NJ 07054  201-515-9400  AIM  AMEX  
      CEO: Mr. William C. Christopoulos  CFO: Mr. Kevin J. McMahon
      Industry: Telecommunications equipment

  AT&E Corp.  One Maritime Plaza
      San Francisco, CA 94111  415-951-1500  ATW  AMEX  
      CEO: Mr. Don G. Hoff  CFO: Mr. Robert S. Martin
      Industry: Telecommunications services

  American Telephone & Telegraph Co.  550 Madison Ave.
      New York, NY 10022  212-605-5500  T  NYSE  
      CEO: Mr. Robert E. Allen  CFO: Mr. Morris Tanenbaum
      Industry: Telecommunications services

  Andrea Radio Corp.  11-40 45th Rd.
      Long Island City, NY 11101  718-729-8500  AND  AMEX  
      CEO: Mr. Frank A. D. Andrea, Jr.  CFO: Mr. Anthony S. Abbene
      Industry: Telecommunications equipment

  Andrew Corp.  10500 W. 153rd St.
      Orland Park, IL 60462  708-349-3300  ANDW  NASDAQ
      CEO: Dr. Floyd L. English, Ph.D.  CFO: Mr. Charles R. Nicholas
      Industry: Telecommunications equipment

  Arden Group, Inc.  2020 S. Central Ave.
      Compton, CA 90220  213-638-2842  ARDNA  NASDAQ
      CEO: Mr. Bernard Briskin  CFO: Mr. Ernest T. Klinger
      Industry: Telecommunications equipment

  Artel Communications Corp.  22 Kane Industrial Dr.
      Hudson, MA 01749  508-562-2100  AXXX  NASDAQ
      CEO: Mr. Robert L. Bowman  CFO: Mr. Gerald M. Schimmoeller
      Industry: Telecommunications equipment

  Aspect Telecommunications Corp.  1730 Fox Dr.
      San Jose, CA 95131  408-441-2200  ASPT  NASDAQ
      CEO: Mr. James R. Carreker  CFO: Mr. Jan A. Praisner
      Industry: Telecommunications equipment

  Associated Communications Corp.  200 Gateway Towers
      Pittsburgh, PA 15222  412-281-1907  ACCMA  NASDAQ
      CEO: Mr. Jack N. Berkman  CFO: Mr. Myles P. Berkman
      Industry: Telecommunications services

  Astrocom Corp.  120 W. Plato Blvd.
      St. Paul, MN 55107  612-227-8651  ACOM  NASDAQ
      CEO: Mr. Stephen C. O'Hara  CFO: Mr. David M. Eichers
      Industry: Telecommunications equipment

  Avantek, Inc.  3175 Bowers Ave.
      Santa Clara, CA 95054  408-727-0700  AVAK  NASDAQ
      CEO: Dr. E. Oran Brigham  CFO: Mr. Steven J. Allan
      Industry: Telecommunications equipment

  Black Industries, Inc.  2816 N. Roxboro St.
      Durham, NC 27704  919-477-0485  BLAK  NASDAQ
      CEO: Mr. Craig M. Black  CFO: Mr. Craig M. Black
      Industry: Telecommunications services

  Boston Technology, Inc.  One Kendall Square
      Cambridge, MA 02139  617-225-0500  BSTN  NASDAQ
      CEO: Mr. Greg C. Carr  CFO: Mr. William J. Burke
      Industry: Telecommunications equipment

  Brite Voice Systems, Inc.  555 N. Woodlawn, Ste. 1-209
      Wichita, KS 67208  316-687-4444  BVSI  NASDAQ
      CEO: Mr. Stanley G. Brannan  CFO: Mr. Glenn A. Etherington
      Industry: Telecommunications equipment

  Burnup & Sims Inc.  One N. University Dr.
      Ft. Lauderdale, FL 33324  305-587-4512  BSIM  NASDAQ
      CEO: Mr. Nick A. Caporella  CFO: Mr. John J. Eckstrom
      Industry: Telecommunications equipment

  C-COR Electronics, Inc.  60 Decibel Rd.
      State College, PA 16801  814-238-2461  CCBL  NASDAQ
      CEO: Mr. Richard E. Perry  CFO: Mr. Jack B. Andrews
      Industry: Telecommunications equipment

  CXR Telcom Corp.  521 Charcot Ave.
      San Jose, CA 95131  408-435-8520  CXR  AMEX  
      CEO: Mr. F. Jack Gorry  CFO: Mr. Kent M. Wilkins
      Industry: Telecommunications equipment

  California Amplifier, Inc.  460 Calle San Pablo
      Camarillo, CA 93012  805-987-9000  CAMP  NASDAQ
      CEO: Mr. Barry W. Hall  CFO: Mr. Barry W. Hall
      Industry: Telecommunications equipment

  California Microwave, Inc.  990 Almanor Ave.
      Sunnyvale, CA 94086  408-732-4000  CMIC  NASDAQ
      CEO: Dr. David B. Leeson  CFO: Mr. George L. Spillane
      Industry: Telecommunications equipment

  Cellcom Corp.  15 Gardner Rd.
      Fairfield, NJ 07006  201-808-1121  CLCM  NASDAQ
      CEO: Mr. Jay H. Brown  CFO: Mr. Gary L. McArthur
      Industry: Telecommunications equipment

  Cellular Communications, Inc.  150 E. 58th St.
      New York, NY 10155  212-319-7014  COMM  NASDAQ
      CEO: Mr. William B. Ginsberg  CFO: Mr. J. Barclay Knapp
      Industry: Telecommunications services

  Celutel, Inc.  400 Market St., 10th Fl.
      Philadelphia, PA 19106  215-922-7370  CLU  AMEX  
      CEO: Mr. Frank S. Scarpa  CFO: Mr. Richard J. Donnelly
      Industry: Telecommunications services

  Centex Telemanagement, Inc.  185 Berry St., Bldg. 1
      San Francisco, CA 94107  415-882-2300  CNTX  NASDAQ
      CEO: Mr. Peter A. Howley  CFO: Mr. Henry P. Huff, III
      Industry: Telecommunications services

  Com Systems, Inc.  7900 Haskell Ave.
      Van Nuys, CA 91406  818-988-3010  CTM  AMEX  
      CEO: Mr. Rex A. Licklider  CFO: Mr. Gerald M. Boylan
      Industry: Telecommunications services

  Comdial Corp.  1180 Seminole Trail
      Charlottesville, VA 22906  804-978-2200  CMDL  NASDAQ
      CEO: Mr. William G. Mustain  CFO: Mr. Wayne R. Wilver
      Industry: Telecommunications equipment

  Communications Satellite Corp.  950 L'Enfant Plaza, S.W.
      Washington, DC 20024  202-863-6000  CQ  NYSE  
      CEO: Mr. Irving Goldstein  CFO: Mr. Robert J. Perry
      Industry: Telecommunications services

  Communications Systems, Inc.  213 S. Main St.
      Hector, MN 55342  612-848-6231  CSII  NASDAQ
      CEO: Mr. Curtis A. Sampson  CFO: Mr. Paul N. Hanson
      Industry: Telecommunications equipment

  Communications Transmission, Inc.  3307 Northland Dr.
      Austin, TX 78731  512-451-0131  CTIA  NASDAQ
      CEO: Mr. Ralph J. Swett  CFO: Mr. Joseph F. Fojtasek
      Industry: Telecommunications equipment

  Compression Labs, Inc.  2860 Junction Ave.
      San Jose, CA 95134  408-435-3000  CLIX  NASDAQ
      CEO: Mr. John E. Tyson  CFO: Mr. John J. O'Shea
      Industry: Telecommunications equipment

  Contel Cellular Inc.  9000 Central Park West
      Atlanta, GA 30328  404-698-6100  CCXLA  NASDAQ
      CEO: Mr. Paul G. Kozlowski  CFO: Mr. William N. Leonard, Jr.
      Industry: Telecommunications services

  DSC Communications Corp.  1000 Coit Rd.
      Plano, TX 75075  214-519-3000  DIGI  NASDAQ
      CEO: Mr. James L. Donald  CFO: Mr. Gerald F. Montry
      Industry: Telecommunications equipment

  Datron Systems, Inc.  200 W. Los Angeles Ave.
      Simi Valley, CA 93065  805-584-1717  DTSI  NASDAQ
      CEO: Mr. David A. Derby  CFO: Mr. Thomas V. Baker
      Industry: Telecommunications equipment

  Davox Corp.  3 Federal St.
      Billerica, MA 01821  508-667-4455  DAVX  NASDAQ
      CEO: Mr. Daniel A. Hosage  CFO: Mr. Kent R. Allen
      Industry: Telecommunications equipment

  Decom Systems, Inc.  1945 Palomar Oaks Way
      Carlsbad, CA 92009  619-431-1945  DSII  NASDAQ
      CEO: Mr. John A. Robinson, Jr.  CFO: Mr. Steven E. Borgardt
      Industry: Telecommunications equipment

  Digital Sound Corp.  2030 Alameda Padre Serra
      Santa Barbara, CA 91303  805-569-0700  DGSD  NASDAQ
      CEO: Mr. Bryan R. Gummon  CFO: Mr. Eugene F. Hovanec
      Industry: Telecommunications equipment

  Digital Systems International, Inc.  7659 - 178th Place N.E.
      Redmond, WA 98052  206-881-7544  DGTL  NASDAQ
      CEO: Mr. Michael L. Darland  CFO: Mr. Michael T. Osborn
      Industry: Telecommunications equipment

  Dycom Industries, Inc.  450 Australian Ave., South
      West Palm Beach, FL 33401  407-659-6301  DY  NYSE  
      CEO: Mr. Thomas R. Pledger  CFO: Mr. Robert T. Owens
      Industry: Telecommunications equipment

  EXECUTONE Information Systems, Inc.  6 Thorndal Circle
      Darien, CT 06820  203-655-6500  XTON  NASDAQ
      CEO: Mr. Alan Kessman  CFO: Mr. Michael W. Yacenda
      Industry: Telecommunications equipment

  Elcotel, Inc.  6428 Parkland Dr.
      Sarasota, FL 34243  813-758-0389  ECTL  NASDAQ
      CEO: Mr. George C. Pierce  CFO: Mr. George W. Kruse
      Industry: Telecommunications equipment

  Electronic Tele-Communications, Inc.  1915 MacArthur Rd.
      Waukesha, WI 53188  414-542-5600  ETCIA  NASDAQ
      CEO: Mr. George W. Danner  CFO: Mr. Jeffrey M. Nigl
      Industry: Telecommunications equipment

  FlowMole Corp.  21409 72nd Ave. South
      Kent, WA 98032  206-395-0200  MOLE  NASDAQ
      CEO: Mr. John R. Potter  CFO: Mr. Charles A. Reilly
      Industry: Telecommunications services

  Graphic Scanning Corp.  25 Rockwood Place
      Englewood, NJ 07631  201-894-8000  GSCC  NASDAQ
      CEO: Mr. Robert J. Cymbala  CFO: Mr. Jay A. Disler
      Industry: Telecommunications services

  Harris Corp.  1025 W. NASA Blvd.
      Melbourne, FL 32919  407-727-9100  HRS  NYSE  
      CEO: Mr. John T. Hartley  CFO: Mr. Bryan R. Roub
      Industry: Telecommunications equipment

  Hotelecopy, Inc.  17850 N.E. 5th Ave.
      Miami, FL 33162  305-651-5176  FAXM  NASDAQ
      CEO: Mr. W. Edd Helms, Jr.  CFO: Mr. John A. Mueller, Jr.
      Industry: Telecommunications services

  ICOT Corp.  3801 Zanker Rd.
      San Jose, CA 95150  408-433-3300  ICOT  NASDAQ
      CEO: Mr. Joel M. Becker  CFO: Mr. John E. Arnold
      Industry: Telecommunications equipment

  IDB Communications Group, Inc.  10525 W. Washington Blvd.
      Culver City, CA 90232  213-870-9000  IDBX  NASDAQ
      CEO: Mr. Jeffrey P. Sudikoff  CFO: Mr. Mortimer S. Adams
      Industry: Telecommunications services

  Infotron Systems Corp.  Cherry Hill Industrial Ctr.-9
      Cherry Hill, NJ 08003  609-424-9400  INFN  NASDAQ
      CEO: Mr. James C. Castle  CFO: Mr. David P. Barnhill
      Industry: Telecommunications equipment

  Intellicall, Inc.  2155 Chenault, Ste. 410
      Carrollton, TX 75006  214-416-0022  ICL  NYSE  
      CEO: Mr. R. Stephen Polley  CFO: Mr. William J. Collinsworth
      Industry: Telecommunications equipment

  Inter-Tel, Inc.  6505 W. Chandler Blvd.
      Chandler, AZ 85226  602-961-9000  INTLA  NASDAQ
      CEO: Mr. Steven G. Mihaylo  CFO: Mr. Ralph Marsh
      Industry: Telecommunications equipment

  InterVoice, Inc.  17811 Waterview Parkway
      Dallas, TX 75252  214-669-3988  INTV  NASDAQ
      CEO: Mr. Daniel D. Hammond  CFO: Mr. Daniel D. Hammond
      Industry: Telecommunications equipment

  International Mobile Machines Corp.  100 N. 20th St.
      Philadelphia, PA 19103  215-665-7800  IMMC  NASDAQ
      CEO: Mr. William J. Hilsman  CFO: Mr. Sidney D. Rosenblatt
      Industry: Telecommunications equipment

  International Telecharge, Inc.  108 S. Akard
      Dallas, TX 75202  214-744-0240  ITI  AMEX  
      CEO: Mr. Allan L. Rayfield  CFO: Mr. Thomas M. Hyatt
      Industry: Telecommunications services

  Keptel, Inc.  56 Park Rd.
      Tinton Falls, NJ 07724  201-389-8800  KPTL  NASDAQ
      CEO: Mr. Richard K. Laird  CFO: Mr. Mark J. Scagliuso
      Industry: Telecommunications equipment

  Kevlin Microwave Corp.  5 Cornell Place
      Wilmington, MA 01887  508-657-3900  KVLM  NASDAQ
      CEO: Mr. Ernest W. Lattanzi  CFO: Mr. Ernest W. Lattanzi
      Industry: Telecommunications equipment

  LDDS Communications, Inc.  4780 Interstate 55 North
      Jackson, MS 39211  601-987-4900  LDDSA  NASDAQ
      CEO: Mr. Bernard J. Ebbers  CFO: Mr. Charles T. Cannada
      Industry: Telecommunications services

  MCI Communications Corp.  1133 Nineteenth St., N.W.
      Washington, DC 20036  202-872-1600  MCIC  NASDAQ
      CEO: Mr. William G. McGowan  CFO: Mr. O. Gene Gabbard
      Industry: Telecommunications services

  Marlton Technologies, Inc.  3000-G Lincoln Dr. East
      Marlton, NJ 08053  609-985-3466  MTY  AMEX  
      CEO: Mr. Fred Cohen  CFO: Mr. Seymour Hernes
      Industry: Telecommunications services

  McCaw Cellular Communications, Inc.  5808 Lake Washington Blvd., NE
      Kirkland, WA 98033  206-827-4500  MCAWA  NASDAQ
      CEO: Mr. Craig O. McCaw  CFO: Mr. Rufus W. Lumry
      Industry: Telecommunications services

  Metro Mobile CTS, Inc.  110 E. 59th St.
      New York, NY 10022  212-605-0800  MMZA  AMEX  
      CEO: Mr. George L. Lindemann  CFO: Mr. John M. Flanagan, Jr.
      Industry: Telecommunications services

  Metro-Tel Corp.  485-13 S. Broadway
      Hicksville, NY 11801  516-937-3420  MTRO  NASDAQ
      CEO: Mr. Venerando J. Indelicato  CFO: Mr. Venerando J. Indelicato
      Industry: Telecommunications equipment

  Microcom, Inc.  500 River Ridge Dr.
      Norwood, MA 02062  617-551-1000  MNPI  NASDAQ
      CEO: Mr. James M. Dow  CFO: Mr. Peter J. Minihane
      Industry: Telecommunications equipment

  Microdyne Corp.  491 Oak Rd.
      Ocala, FL 32672  904-687-4633  MCDY  NASDAQ
      CEO: Mr. Donald L. Feller  CFO: Mr. Robert K. Michaels
      Industry: Telecommunications equipment

  Millicom, Inc.  153 E. 53rd St.
      New York, NY 10022  212-355-3440  MILL  NASDAQ
      CEO: Mr. J. Shelby Bryan  CFO: Mr. Lawrence Melillo
      Industry: Telecommunications services

  Mobile Telecommunications Technologies Corp.  200 S. Lamar
      Jackson, MS 39201  601-944-1300  MTTL  NASDAQ
      CEO: Mr. John N. Palmer  CFO: Mr. J. Robert Fugate
      Industry: Telecommunications services

  Nationwide Cellular Service, Inc.  20 E. Sunrise Highway
      Valley Stream, NY 11582  516-568-2000  NCEL  NASDAQ
      CEO: Mr. Stephen Katz  CFO: Mr. Jerome Sanders
      Industry: Telecommunications services

  Network Equipment Technologies, Inc.  800 Saginaw Dr.
      Redwood City, CA 94063  415-366-4400  NWK  NYSE  
      CEO: Mr. Bruce D. Smith  CFO: Mr. Barrett B. Roach
      Industry: Telecommunications equipment

  Norstan, Inc.  6900 Wedgwood Rd., Ste. 150
      Maple Grove, MN 55369  612-420-1100  NRRD  NASDAQ
      CEO: Mr. Paul Baszucki  CFO: Mr. James D. Bonneville
      Industry: Telecommunications equipment

  Octel Communications Corp.  890 Tasman Dr.
      Milpitas, CA 95035  408-942-6500  OCTL  NASDAQ
      CEO: Mr. Robert Cohn  CFO: Mr. Robert G. Sweifach
      Industry: Telecommunications equipment

  Panatech Research and Development Corp.  655 Deep Valley Dr., Ste. 300
      Rolling Hills Ests., CA 90274  213-541-0221  PNTC  NASDAQ
      CEO: Mr. Arthur J. Rosenberg  CFO: Mr. Arthur J. Rosenberg
      Industry: Telecommunications equipment

  Penril Corp.  1300 Quince Orchard Blvd.
      Gaithersburg, MD 20878  301-417-0552  PNL  AMEX  
      CEO: Mr. Henry D. Epstein  CFO: Mr. Harry O. Christenson
      Industry: Telecommunications equipment

  Perception Technology Corp.  40 Shawmut Rd.
      Canton, MA 02021  617-821-0320  PCEP  NASDAQ
      CEO: Mr. Irwin Jacobs  CFO: Mr. Paul R. Yecies
      Industry: Telecommunications equipment

  Pico Products, Inc.  103 Commerce Blvd.
      Liverpool, NY 13088  315-451-7700  PPI  AMEX  
      CEO: Mr. Bernard K. Hitchcock  CFO: Mr. Peter D. Smith
      Industry: Telecommunications equipment

  Porta Systems Corp.  575 Underhill Blvd.
      Syossett, NY 11791  516-364-9300  PSI  AMEX  
      CEO: Mr. Vincent F. Santulli  CFO: Mr. Michael A. Tancredi
      Industry: Telecommunications equipment

  ProNet Inc.  600 Data Dr., Ste. 100
      Plano, TX 75075  214-964-9500  PNET  NASDAQ
      CEO: Mr. Jackie R. Kimzey  CFO: Ms. Jan E. Clinger
      Industry: Telecommunications equipment

  Radiation Systems, Inc.  1501 Moran Rd.
      Sterling, VA 22170  703-450-5680  RADS  NASDAQ
      CEO: Mr. Richard E. Thomas  CFO: Mr. Mark D. Funston
      Industry: Telecommunications equipment

  Regency Electronics, Inc.  7707 Records St.
      Indianapolis, IN 46226  317-545-4281  RGCY  NASDAQ
      CEO: Mr. Steven L. Wilkening  CFO: Mr. Steven L. Wilkening
      Industry: Telecommunications equipment

  Satellite Information Systems Co.  100 Arapahoe Ave., Ste. 1
      Boulder, CO 80302  303-449-0442  SATI  NASDAQ
      CEO: Mr. Michael J. Ellis  CFO: Mr. Donald V. Burt
      Industry: Telecommunications equipment

  Science Dynamics Corp.  1919 Springdale Rd.
      Cherry Hill, NJ 08003  609-424-0068  SIDY  NASDAQ
      CEO: Mr. Lyndon A. Keele  CFO: Mr. Lyndon A. Keele
      Industry: Telecommunications equipment

  Scientific-Atlanta, Inc.  One Technology Parkway
      Atlanta, GA 30348  404-441-4000  SFA  NYSE  
      CEO: Mr. William E. Johnson  CFO: Mr. Raymond M. Hartnett
      Industry: Telecommunications equipment

  Syntellect, Inc.  15810 N. 28th Ave.
      Phoenix, AZ 85023  602-789-2800  SYNL  NASDAQ
      CEO: Dr. S. Thomas Emerson, Ph.D.  CFO: Mr. C. Philip Chapman
      Industry: Telecommunications equipment

  TCI International, Inc.  34175 Ardenwood Blvd.
      Fremont, CA 94536  415-795-7800  TCII  NASDAQ
      CEO: Mr. John W. Ballard  CFO: Mr. William L. Gamble
      Industry: Telecommunications equipment

  TIE/communications, Inc.  4 Progress Ave.
      Seymour, CT 06483  203-888-8000  TIE  AMEX  
      CEO: Mr. Thomas L. Kelly, Jr.  CFO: Mr. Anthony T. Guiterman
      Industry: Telecommunications equipment

  Technical Communications Corp.  100 Domino Dr.
      Concord, MA 01742  508-862-6035  TCCO  NASDAQ
      CEO: Mr. Arnold M. McCalmont  CFO: Mr. Herbert A. Lerner
      Industry: Telecommunications equipment

  Tekelec  26580 W. Agoura Rd.
      Calabasas, CA 91302  818-880-5656  TKLC  NASDAQ
      CEO: Mr. Peter N. Vicars  CFO: Mr. Philip J. Alford
      Industry: Telecommunications equipment

  Telco Systems, Inc.  63 Nahatan St.
      Norwood, MA 02062  617-551-0300  TELC  NASDAQ
      CEO: Mr. Paul D. Lazay  CFO: Mr. John A. Ruggiero
      Industry: Telecommunications equipment

  TeleConcepts Corp.  36 Holly Dr.
      Newington, CT 06111  203-666-5666  TCC  AMEX  
      CEO: Dr. William D. Putt  CFO: Dr. William D. Putt
      Industry: Telecommunications equipment

  Telebit Corp.  1315 Chesapeake Terrace
      Sunnyvale, CA 94089  408-734-4333  TBIT  NASDAQ
      CEO: Mr. Lewis F. Ellmore  CFO: Mr. Steven A. Hess
      Industry: Telecommunications equipment

  Telematics International, Inc.  1201 Cypress Creek Rd.
      Ft. Lauderdale, FL 33309  305-772-3070  TMAX  NASDAQ
      CEO: Mr. William A. Hightower  CFO: Ms. Miriam K. Frazer
      Industry: Telecommunications equipment

  Telesphere Communications, Inc.  Two Mid America Plaza
      Oakbrook Terrace, IL 60181  708-954-7700  TSP  AMEX  
      CEO: Mr. Harry R. Thompson  CFO: Mr. Scott L. Drake
      Industry: Telecommunications services

  Tellabs, Inc.  4951 Indiana Ave.
      Lisle, IL 60532  708-969-8800  TLAB  NASDAQ
      CEO: Mr. Michael J. Birck  CFO: Mr. Peter A. Guglielmi
      Industry: Telecommunications equipment

  U S WEST NewVector Group, Inc.  3350 161st Ave. S.E.
      Bellevue, WA 98008  206-747-4900  USWNA  NASDAQ
      CEO: Mr. John E. DeFeo  CFO: Mr. John M. Stachowiak
      Industry: Telecommunications services

  United States Cellular Corp.  1030 Higgins Rd.
      Park Ridge, IL 60068  708-696-3500  USM  AMEX  
      CEO: Mr. H. Donald Nelson  CFO: Mr. Kenneth R. Myers
      Industry: Telecommunications services

  Universal Security Instruments, Inc.  10324 S. Dolfield Rd.
      Owings Mill, MD 21117  301-363-3000  USEC  NASDAQ
      CEO: Mr. Stephen Knepper  CFO: Mr. Harvey Grossblatt
      Industry: Telecommunications equipment

  V Band Corp.  565 Taxter Rd.
      Elmsford, NY 10523  914-789-5000  VBAN  NASDAQ
      CEO: Mr. James J. Boyce  CFO: Mr. George J. Rogers
      Industry: Telecommunications equipment

  VMX, Inc.  110 Rose Orchard Way
      San Jose, CA 95134  408-943-0144  VMXI  NASDAQ
      CEO: Mr. Patrick S. Howard  CFO: Mr. Bruce C. Pollock
      Industry: Telecommunications equipment

  Vanguard Cellular Systems, Inc.  2002 Pisgah Church Rd.
      Greensboro, NC 27408  919-282-3690  VCELA  NASDAQ
      CEO: Mr. Haynes G. Griffin  CFO: Mr. Stephen L. Holcombe
      Industry: Telecommunications services

  VeriFone, Inc.  One Lagoon Dr., Ste. 200
      Redwood City, CA 90465  415-591-6500  VFIC  NASDAQ
      CEO: Mr. Hatim Tyabji  CFO: Mr. Thomas W. Hubbs
      Industry: Telecommunications equipment

  Vertex Communications Corp.  2600 N. Longview St.
      Kilgore, TX 75662  214-984-0555  VTEX  NASDAQ
      CEO: Mr. J. Rex Vardeman  CFO: Mr. James D. Carter
      Industry: Telecommunications equipment

  Vitalink Communications Corp.  6607 Kaiser Dr.
      Fremont, CA 94555  415-794-1100  VITA  NASDAQ
      CEO: Mr. Leslie G. Denend  CFO: Mr. Wesley S. Saia
      Industry: Telecommunications equipment

  Walker Telecommunications Corp.  200 Oser Ave.
      Hauppauge, NY 11788  516-435-1100  WTEL  NASDAQ
      CEO: Mr. Burt Walker  CFO: Mr. Irwin R. Eyerman
      Industry: Telecommunications equipment

  Wegener Corp.  11350 Technology Circle
      Duluth, GA 30136  404-623-0096  WGNR  NASDAQ
      CEO: Mr. Robert A. Placek  CFO: Mr. C. Troy Woodbury, Jr.
      Industry: Telecommunications equipment

  Western Union Corp.  One Lake St.
      Upper Saddle River, NJ 07458  201-825-5000  WU  NYSE  
      CEO: Mr. Robert J. Amman  CFO: Mr. Stewart J. Paperin
      Industry: Telecommunications services
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