Where a recipient communicates by telephone it must use text telephones or equally effective telecommunications systems with people who are deaf, hard of hearing or have speech impairments; automated attendant, voice mail and interactive voice response systems must give effective real-time communication with auxiliary aids including TTYs and all FCC-approved relay services; relay calls must be answered like any other; and telephone emergency services including 911 must give direct access to TTY and computer modem users. The recipient must ensure interested persons, including those with impaired vision or hearing, can obtain information on the existence and location of accessible services, activities and facilities, and must post signage at inaccessible entrances directing users to an accessible entrance or to information, using the international symbol of accessibility at each accessible entrance. The communications subpart does not require fundamental alterations or undue burdens, but that decision must be made by the head of the recipient or a designee after considering all resources and recorded in a written statement of reasons, with any lesser action that still ensures the benefits to the maximum extent possible.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.