This is a series of value-added information services provided by China Telecom based on the telephone number information service, providing customers with a kind of facilitative service that relates to "clothing, dining, housing, traveling and other consumptions". By dialing the service access number 114/118114, a customer can be provided with such information as food and beverage availability, tourist advice, road guide, hotel reservation and daily consumption articles. Through this service, basic corporate information, service range and product information of registered enterprises can be popularized to the public, and the enterprises can be benefited from reputation enhancement and business opportunity development.

The "Best Tone" mainly includes the following four categories of services: Category 1. Industry first enquiry: providing the enquired with such value-added services as industry first enquiry, enquiry on multiple conditions and enquiry information analyses; Category II. Enquiry transit: providing the enquirer with such value-added services as call transit, short message/facsimile number reporting, addresses and road guide; Category III. Information publication: providing the enquired with enterprise information dissemination service while providing the enquirer with information enquiry service that is based on information of the enquired; Category IV. Communications assistance: providing business and individual customers with such value-added services as private telephone directory management, enterprise switchboard, personal secretary and automatic traffic transit.