Multimedia messaging service (MMS) is one of the most competitive value-added services in the communication market.

多媒体信息服务，也称为彩信服务成为最有竞争力的增值业务之一。

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Abstract】 Multimedia Ring Tone(MRT) service is a value-added service which makes multimedia as the ring tone.

摘要 ：多媒体彩像业务（MRT）是一种采用多媒体作为响铃音的增值业务。

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