扫描当前时间到前两小时的话单数据。扫描范围内的数据，满足以下规则，即认为异常。 1）、时间范围内连续拨打同一号码监控 在扫描时间范围内，同一个国际被叫号码连续拨打5（可自行配置）次以上。 2）、时间范围内单次拨打电话通话时间过长监控 在扫描时间范围内，国际拨打的一通电话通话时长超过15分钟（可自行配置）分钟以上。 3）、时间范围内拨打同一个号码次数监控 在扫描时间范围内，同一个被叫国际号码总共被拨打的次数5次（可自行配置）以上。 4）、时间范围内拨打国际长途次数监控 在扫描时间范围内，号码总共拨打国际长途的次数10次（可自行配置）以上。mysql实现

可以使用MySQL的查询语句来实现对话单数据的扫描和监控，下面是一个可能的实现方案：

SELECT caller_number, called_number, call_start_time, call_end_time, call_duration
FROM call_records
WHERE call_start_time >= DATE_SUB(NOW(), INTERVAL 2 HOUR)
AND (
    -- 规则1：连续拨打同一号码监控
    (caller_number, called_number) IN (
        SELECT caller_number, called_number
        FROM (
            SELECT caller_number, called_number, call_start_time,
            IF(called_number=@prev_called_number, @cnt:=@cnt+1, @cnt:=1) AS cnt,
            @prev_called_number:=called_number
            FROM call_records, (SELECT @prev_called_number:=NULL, @cnt:=1) AS vars
            WHERE call_start_time >= DATE_SUB(NOW(), INTERVAL 2 HOUR)
            AND caller_number NOT LIKE '0%'
            ORDER BY called_number, call_start_time
        ) AS t
        WHERE cnt >= 5
    )
    OR
    -- 规则2：单次拨打电话通话时间过长监控
    (call_duration >= 900)
    OR
    -- 规则3：拨打同一个号码次数监控
    (called_number IN (
        SELECT called_number
        FROM call_records
        WHERE call_start_time >= DATE_SUB(NOW(), INTERVAL 2 HOUR)
        AND caller_number NOT LIKE '0%'
        GROUP BY called_number
        HAVING COUNT(DISTINCT caller_number) >= 5
    ))
    OR
    -- 规则4：拨打国际长途次数监控
    (caller_number NOT LIKE '0%' AND LENGTH(caller_number) > 5 AND LENGTH(caller_number) < 16 AND LENGTH(called_number) > 5 AND LENGTH(called_number) < 16
    AND (SELECT COUNT(*) FROM call_records WHERE caller_number=cr.caller_number AND called_number=cr.called_number AND call_start_time >= DATE_SUB(NOW(), INTERVAL 2 HOUR)) >= 10)
)

这个查询语句会返回扫描时间范围内满足监控规则的通话记录，其中包含主叫号码、被叫号码、通话开始时间、通话结束时间和通话时长等信息。你可以根据实际需要对查询语句进行修改和优化。