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Caching message information in an integrated communication system

  • US 8,233,594 B2
  • Filed: 02/07/2005
  • Issued: 07/31/2012
  • Est. Priority Date: 02/07/2005
  • Status: Active Grant
First Claim
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1. A system comprising:

  • two or more networks of differing types, wherein at least one network includes;

    a messaging server, wherein the messaging server receives and stores a received message;

    a communication server that couples among the two or more networks of different types to receive messages and requests for messages;

    at least one cache server that couples to the communication server and also caches the received message; and

    a detector that couples to the messaging server to detect whether the messaging server is available or unavailable, wherein;

    if the messaging server is available, the communication server transfers the received message to the messaging server and, in response to a request for one or more messages, retrieves the one or more requested messages from the messaging server; and

    if the messaging server is unavailable and in response to a request for one or more messages, the communication server retrieves the one or more requested messages from the cache server.

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