BT provides and supports advanced voice services via its Derived Services Network (DSN) which overlays the normal telephone network. This paper examines the latest network features to support independent service providers and its own managed voice services, showing how they can be combined in a powerful way to serve high call volume applications such as telemedia advertising.
Keywords: Customer Access Manager, Mid-Call Diversion, Premium Rate Service, Remote Download, Remote Update, Service Management, Telemedia, Televote