Method, system and device for transmitting multimedia message to the terminal in the conference system

Abstract

The embodiment of the invention discloses a method used to send a multimedia message to a terminal inside a conference system based on session initial protocol (SIP). The method comprises the following steps: a conference center server receives a multimedia message sent from a sender terminal and judges whether the sender terminal supports the multimedia message; if the sender terminal does not support the multimedia message, the multimedia message is operated according to a conference strategy allocated in advance. The embodiment of the invention also discloses a system and a conference center server used to send a multimedia message to a terminal inside a conference system based on SIP. The method, the system and the conference center server can improve the capability of a terminal in receiving a multimedia message, thereby improving conference quality accordingly.

Description

technical field [0001] The invention relates to multimedia conference technology, in particular to a method, system and equipment for sending multimedia messages to terminals in a conference system based on Session Initiation Protocol (SIP). Background technique [0002] In the current SIP-based multimedia conference system (hereinafter referred to as the conference system), when each participant sends his own multimedia message, he hopes that the message can be correctly received by other to display or play. However, due to differences in negotiation capabilities between the terminals of different participants and the conference center, it is likely that the terminals of other participants cannot normally receive the multimedia message from the sender terminal, thereby reducing the conference quality. [0003] When each participant joins the conference system, the conference center will first conduct capability negotiation with the participant's terminal. The content of th...

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Problems solved by technology

[0010]However, although the above method can achieve good results in MMS, it is not applicable in multimedia conference system

First of all, the MMSC stores the multimedia short message received from the sender terminal until a predetermined time, and if it has not received the extraction request sent by the receiver terminal, it will dump the multimedia short message, which is not suitable for conference systems Yes, because the conference system is a process of processing information in real time; secondly, the content adaptation capability in MMS is the capability actually possessed by the terminal. When the adaptation fails, MMS will send the original multimedia message to the receiving terminal or directly The original multimedia message is deleted, but the content adaptation capability in the SIP conference system is negotiated between the conference center server and the participant terminal, which does not have the above functions and cannot process multimedia messages according to its own strategy. The terminal cannot normally receive the multimedia messages sent by other terminals, which reduces the receiving ability of each terminal and further reduces the quality of the conference

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