| 摘要 |
The invention provides a method and system for signaling asynchronous supplementary services in a telephony network. The method comprises initiating a call between a sender and a recipient on a telephony network including generating a telephony request and disconnecting the call prior to completion of a connection. Concomitantly, an asynchronous communication is initiated between the sender and the recipient using information in the telephony request. The call may be disconnected prior to allocation of a traffic channel or prior to generating a ring at a device of the recipient. In one embodiment the call is disconnected after receipt of the telephony request by an originating mobile switching center but before continuing set-up of the call. Calls aborted in this way can be used to initiate messaging or other services without utilising voice circuits in a network.
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