2016 California Standards for Accessible Design Pocket Guide - Eff. Jan. 1, 2017
11B-708 Two-way communication systems.
11B-708.1 General. Two-way communication systems shall comply with Section 11B-708.
11B-708.2 Audible and visual indicators. The system shall provide both audible and visual signals.
11B-708.3 Handsets. Handset cords, if provided, shall be 29 inches (737 mm) long minimum.
11B-708.4 Residential dwelling unit communication systems. Communications systems between a residential dwelling unit and a site, building, or floor entrance shall comply with Section 11B-708.4.
11B-708.4.1 Common use or public use system interface. The common use or public use system interface shall include the capability of supporting voice and TTY communication with the residential dwelling unit interface.
11B-708.4.2 Residential dwelling unit interface. The residential dwelling unit system interface shall include a telephone jack capable of supporting voice and TTY communication with the common use or public use system interface.
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