| 摘要 |
The system comprises a client and a set of servers for processing calls in a communications system; the servers providing call status messages to the client; in which each call status message comprises an identifier associated with the call to which the message relates. The client is arranged to handle duplicate copies of call status messages as follows. The client receives a copy of each call status message from each of the servers and identifies duplicate copies of each message received by reading the identifier in the received messages.
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