| 摘要 |
<p>The invention provides a method and system for signaling asynchronous sup plementary services in a telephony network. The method comprises initiating a call between a sender and a recipient on a telephony network including gen erating a telephony request and disconnecting the call prior to completion o f a connection. Concomitantly, an asynchronous communication is initiated be tween the sender and the recipient using information in the telephony reques t. 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 t he call is disconnected after receipt of the telephony request by an origina ting 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 wit hout utilising voice circuits in a network.</p> |
