1
                                                                    Exhibit 21.0

                           SUBSIDIARIES OF THE COMPANY




NAME                                                LOCATION                            STATE OF INCORPORATION
- ----                                                --------                            ----------------------

                                                                                
American Telephone Wiring Company                   Charleston, West Virginia, USA      West Virginia

Associated Network Solutions, Inc.                  St. Petersburg, Florida, USA        Florida

ATIMCO Network Services, Inc.                       Pittsburgh, Pennsylvania, USA       Pennsylvania

BBOX Holding Company                                Wilmington, Delaware, USA           Delaware

BB Technologies, Inc.                               Wilmington, Delaware, USA           Delaware

Black Box of Pennsylvania                           Lawrence, Pennsylvania, USA         Delaware

South Hills Holdings, Inc.                          Pittsburgh, Pennsylvania, USA       Delaware

Midwest Communications Technologies, Inc.           Columbus, Ohio                      Ohio

Wakefield Electronics Group Inc.                    Pittsburgh, Pennsylvania,           Delaware
(South Hills Datacomm)                              USA

Alpeco International Foreign Sales Corporation      Bridgetown, Barbados

Alpeco Puerto Rico, Inc.                            San Juan, Puerto Rico

Black Box Australia Pty, Ltd.                       Croydon VIC, Australia

Black Box Canada Corporation                        Ontario, Canada

Black Box Catalog New Zealand Limited               Wellington, New Zealand

Black Box Catalogue, Ltd.                           Reading, England

Black Box Communication SANV                        Zaventum, Belgium

Black Box Datacom, B.V.                             Utrecht, Netherlands

Black Box de Mexico, S.A. de C.V.                   Mexico City, Mexico

Black Box Deutschland GmbH                          Munich, Germany

Black Box do Brazil Industria e Comercio Ltda.      Sao Paulo, Brazil

Black Box France, S.A.                              Rungis, France

Black Box Foreign Sales Corporation                 St. Thomas, U.S.V.I.

Black Box Italia, SpA                               Vimodrone, Italy

Black Box Japan Kabushiki Kaisha                    Tokyo, Japan

Datacom Black Box Services AG                       Altendorf, Switzerland

Datacom Black Box Holding, AG                       Zug, Switzerland

South Hills Datacomm Chile, S.A.                    Santiago, Chile

South Hills Datacomm, Ltda                          Bogota, Columbia

South Hills Datacomm Venezuela                      Caracas, Venezuela