This Standard sets out requirements for the design, application and testing of assistive listening systems (ALSs). It also provides information to enable access to communication for people who have a hearing impairment or who are deaf.

This Standard provides information in relation to varying degrees of hearing loss, and design solutions and equipment including—

(a) assistive listening systems (ALSs), speech intelligibility and environmental interference;

(b) assistive listening systems' (ALSs) application in the built and transport environments, indoor and outdoor;

(c) early warning systems—auditory, visual, and tactile requirements;

(d) visual display systems for intercommunication, public announcements and the like; and

(e) telephone services and telecommunications available to the public.