Advertised ring back in a telecommunication switching system

摘要

Transmitting by a public service provider an audio message to the calling party instead normal ring back tones when a call is placed by a calling party to a called party. This audio message is an advertisement that is paid for by a third party. If the calling party wishes more information concerning the advertisement, the calling party indicates this desire either by a spoken command or by accuation of a multi-frequency key on the telephone hand set during the message. If the calling party has indicated a desire to obtain more information with respect to the advertisement, when the call to the called party is completed, the public service provider will automatically connect the calling party to a system that will provide additional information concerning the advertisement. A data terminal placing a data call will receive advertisements in a similar manner. <IMAGE>