Telephone Directories. A pay phone service provider shall provide both white page and yellow page telephone directories on an annual basis for: All indoor pay phone locations; and Outdoor pay phone locations when requested by the site owner. Height and Hearing Requirements. A pay phone service provider shall comply with Maryland and federal height and hearing aid compatibility regulations when installing a pay phone. Access to Interexchange Carriers. A pay phone service provider shall ensure that its pay phone: Permits access to all interexchange carriers; and Allows completion of local and long distance calls in Maryland. Coin Capability. Except as provided under §D(2) of this regulation, a pay phone service provider shall ensure that its pay phone is capable of: Accepting nickels, dimes, and quarters; and Handling sent-paid long distance other than sent-paid person-to-person calls, unless the pay phone is connected to a network-controlled coin line. A coinless pay phone that is exclusively card operated is not required to accept coin payment. Coin Return. A pay phone service provider shall ensure that a coin-operated pay phone returns a deposited coin if a called telephone number is busy or not answered. Amplified Handset. A pay phone service provider shall install: An amplified handset on a pay phone that replaces a phone with an amplified handset; or One pay phone with an amplified handset for every four pay phones in a single phone bank.