| 摘要 |
A method for transmitting deferred messages, applicable in an instant message system based on Session Initiation Protocol (SIP)/SIP Instant Message and Presence Leveraging Extensions (SIMPLE). After a client registers to the IM system and an IM server detects there are deferred messages to be sent to the client stored in the IM system, the method carries out steps of the IM server obtaining the deferred messages stored in the IM system for the client; and the IM server sending the deferred messages to the client. The present invention makes the SIP/SIMPLE IM system support a complete solution for processing deferred messages, which enriching the users' service experience and saving system resource.
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