27 00 00 Communications
27 05 00 Common Work Results for Communications
27 05 05 Selective Demolition for Communications 27 05 11 Cameras for Audio-Visual Systems 27 05 12 Cyber Security Requirements for Communications 27 05 13 Communications Services 27 05 13.13 Dialtone Services 27 05 13.23 T1 Services 27 05 13.33 DSL Services 27 05 13.43 Cable Services 27 05 13.53 Satellite Services 27 05 26 Grounding and Bonding for Communications Systems 27 05 28 Pathways for Communications Systems 27 05 29 Hangers and Supports for Communications Systems 27 05 33 Conduits and Backboxes for Communications Systems 27 05 36 Cable Trays for Communications Systems 27 05 39 Surface Raceways for Communications Systems 27 05 43 Underground Ducts and Raceways for Communications Systems 27 05 44 Sleeves and Sleeve Seals for Communications Pathways and Cabling 27 05 46 Utility Poles for Communications Systems 27 05 48 Vibration and Seismic Controls for Communications Systems 27 05 48.16 Seismic Controls for Communications Systems 27 05 53 Identification for Communications Systems