This U.S. industry comprises establishments primarily engaged in repairing and maintaining communications equipment without retailing new communication equipment, such as telephones, fax machines, communications transmission equipment, and two-way radios. Cross-References. Establishments primarily engaged in-- ? Retailing new telephones and also providing repair services--are classified in U.S. Industry 443112, Radio, Television, and Other Electronics Stores; and ? Repairing stereo and other consumer electronic equipment--are classified in U.S. Industry 811211, Consumer Electronics Repair and Maintenance.