26 00 00 Electrical 27 00 00 Communications 27 05 00 Common Work Results for Communications 27 20 00 Data Communications 27 24 00 Data Communications Peripheral Data Equipment 27 26 00 Data Communications Programming and Integration Services 27 30 00 Voice Communications 27 31 00 Voice Communications Switching and Routing Equipment 27 32 00 Voice Communications Terminal Equipment 27 33 00 Voice Communications Messaging 27 40 00 Audio-Video Communications

01 89 26 Site Electrical Utilities Performance Requirements 26 00 00 Electrical 27 00 00 Communications 27 05 00 Common Work Results for Communications 27 20 00 Data Communications 27 24 00 Data Communications Peripheral Data Equipment 27 26 00 Data Communications Programming and Integration Services 27 30 00 Voice Communications 27 31 00 Voice Communications Switching and Routing Equipment 27 32 00 Voice Communications Terminal Equipment 27 33 00 Voice Communications Messaging 27 40 00 Audio-Video Communications 28 00 00 Electronic Safety and Security 28 05 00 Common Work Results for Electronic Safety and Security 28 31 00 Fire Detection and Alarm 33 70 00 Electrical Utilities 33 71 00 Electrical Utility Transmission and Distribution

21 09 00 Instrumentation and Control for Fire-Suppression Systems 25 00 00 Integrated Automation 27 00 00 Communications 27 05 00 Common Work Results for Communications 27 20 00 Data Communications 27 24 00 Data Communications Peripheral Data Equipment 27 26 00 Data Communications Programming and Integration Services 27 30 00 Voice Communications 27 31 00 Voice Communications Switching and Routing Equipment 27 32 00 Voice Communications Terminal Equipment 27 33 00 Voice Communications Messaging 27 40 00 Audio-Video Communications 28 00 00 Electronic Safety and Security 28 05 00 Common Work Results for Electronic Safety and Security 28 31 00 Fire Detection and Alarm

21 09 00 Instrumentation and Control for Fire-Suppression Systems 25 00 00 Integrated Automation 27 00 00 Communications 27 05 00 Common Work Results for Communications 27 20 00 Data Communications 27 24 00 Data Communications Peripheral Data Equipment 27 26 00 Data Communications Programming and Integration Services 27 30 00 Voice Communications 27 31 00 Voice Communications Switching and Routing Equipment 27 32 00 Voice Communications Terminal Equipment 27 33 00 Voice Communications Messaging 27 40 00 Audio-Video Communications 28 00 00 Electronic Safety and Security 28 05 00 Common Work Results for Electronic Safety and Security 28 31 00 Fire Detection and Alarm

26 00 00 Electrical 27 00 00 Communications 27 05 00 Common Work Results for Communications 27 20 00 Data Communications 27 24 00 Data Communications Peripheral Data Equipment 27 26 00 Data Communications Programming and Integration Services 27 30 00 Voice Communications 27 31 00 Voice Communications Switching and Routing Equipment 27 32 00 Voice Communications Terminal Equipment 27 33 00 Voice Communications Messaging 27 40 00 Audio-Video Communications