RCCallPlusMediaTypeChangeResult

取消媒体类型切换

拒绝媒体类型切换请求

服务仲裁允许媒体类型切换

发起媒体类型切换后，远端用户60秒未响应导致的超时

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Returns an array containing the constants of this enum type, in the order they're declared. This method may be used to iterate over the constants.