| 摘要 |
<p>A communications system having a transit switch for forwarding telephony calls. The transit switch has detector that detects whether a forwarding call is being diverted or is about to be diverted. The transit switch also includes a releasing function to release the call in response to the detector detecting that the forwarded call is being diverted or is about to be diverted. The communications system disconnects the call before the diverted call is completed so that no call charge is made to the caller. The communications system further includes an originating exchange, transit exchange and destination exchange whereby the originating exchange is able to forward calls to the transit exchange which includes the transit switch, and the transit exchange is able to forward the calls to a destination exchange.</p> |
