| 摘要 |
<p>A method of indicating availability in a telecommunications network, the method comprising: initiating an availability alerting service in response to a trigger associated with non-completion of an initial call from a calling party to a called party, the availability alerting service providing the calling party with availability alert information to solicit a follow-up call from the calling party when the called party has a given availability state after the initial call, wherein the availability alerting service is responsive to a plurality of different availability states relating to the called party, and wherein the availability alerting service detects a first availability status change relating to the called party after initiation of the availability alerting service and transmits a first availability update message to the calling party to solicit the follow-up call on the basis of the detected first availability status change, and detects a second availability status change, subsequent to the first availability status change, and transmits a second availability update message to the calling party to at least inhibit the follow-up call on the basis of the detected first availability status change.</p> |
