| 摘要 |
<p>A message distribution centre for routing a message from a first subscriber (10) to a second subscriber (20) across a communication network, comprising means for receiving a message for a second subscriber from a first subscriber (50), the message including a subscriber ID for the second subscriber, database (55) for storing distribution addresses corresponding to subscriber IDs; means for interrogating the database on receiving a message to determine whether the database includes the distribution address associated with the ID of the second subscriber; means for retrieving the distribution address for the second subscriber from a register (70) associated with the second subscriber if the distribution address is not stored in the database; means for storing the retrieved distribution address for the second subscriber and associated subscriber ID in the database; and means (52) for forwarding the message and the subscriber ID to the distribution address of the second subscriber,
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