Opt-in prefix dial prior to an outbound call number. System delivers the audio message and allows an interactive response to request a sample summary or more the full content element.
Audio responses can be prior-to or after the call is terminated.
Secondary responses as interactive follow-ups to the initial response include the same media options as initial responses with the addition of a potential call center connection for initial audio responses. Typically the operator enables the subscriber to dial a prefix to hear ads for subsidized airtime.