3G-324M指定H.263为强制性基准协议（附录中的扩展标准除外），而把MPEG-4制定为推荐视频编码标准。H.263作为老的编码标准仍然应用于现有的H.323系统，因而保留它可以提供系统兼容性。MPEG-4比H.263基准协议拥有更高的灵活性，它提供了更先进的错误检测和纠错方法。,3G-324M

随着3G牌照的发放，该资料对终端设计厂商设计手机具有极其重要的指导作用-With the issuance of 3G licenses, the information on the terminal design manufacturers to design mobile phone as an extremely important role in guiding

3g-324m协议栈相关协议(H.223 H.245 3G-324M)-3g-324m agreement protocol stack (H.223 H.245 3G-324M)

3gpp协议的相关规范，包括324m/h.324,h.323,以及彩信mms协议，3g终端用户接口开发指导，适用wcdma,td-scdma应用开发参考-3gpp agreement related specifications, including 324m/h.324, h.323, and MMS mms protocol, 3g end-user interface development guidance for wcdma, td-scdma Application Developm