| 摘要 |
An opt-out request in one example is received from a calling party to avoid employment of a specialized ringback tone on one or more subsequent calls from the calling party to a called party. A ringback tone call controller determines, based on the opt-out request, to provide a substitute tone to the calling party in place of the specialized ringback tone on the one or more subsequent calls from the calling party to the called party. After receiving the opt-out request on a call, the specialized ringback tone in a further example is stopped for a remainder of a ringing phase of the call. If a ringback tone service state associated with the calling party is an opt-out state, then in one example the calling party makes an opt-in request to allow use of the specialized ringback tone on one or more subsequent calls to the called party.
|
