| 11. |
如果多块板卡的顺序乱了，可以调节顺序吗？(2007.05) |
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答：可以，MTBoardSetConfig() 函数可以设置板卡的索引, 使用结构MTADAPTER_CONFIGURATION的PresentationPreference字段。
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| 12. |
如何调节左右声道音量大小？(2007.05) |
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答：1.对于NGX卡，MTChInputSetGain() 可以分别对通话双方单独放大减小音量，Primary调节远端，Secondary调节近端，电话线交换位置后，没有任何改变。
2.对于LD卡，不区分左右声道，MTChInputSetGain() 可以放大减小音量，并只有Primary有效，电话线交换位置后，没有任何改变。
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| 13. |
存储为Wav格式后,无法识别问题。(2007.05) |
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答：目前录音函数只支持MSGSM格式自动添加Wave文件头.
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| 14. |
系统日志提示Ch XX encode queue overflow的含义?
(2007.05) |
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答：Encode queue overflow indicates that Data is not being retrieved fast enough. Encoding audio to specified format (G.711 for example) and the processor has become busy and cannot process the encode queue often enough.
Perhaps you may be in the Channel Callback too long or some other process is taking up CPU time such as:
system backup process
an antivirus program actively scanning the computer or scanning the new files as they are created. windows update from host computer or from admin computer over network.
Also, some networks run with the virus scanner running on a remote PC. This can cause a bottleneck at the point of the network as information now has to travel across the network to be scanned.
This could also be related to the codec you are recording in. If you have selected a high bitrate encoder, and are recording on many channels simultaneously, you may run into a resource bottleneck.
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| 15. |
系统日志提示ch Z event 0xXXXX dropped due to queue full的含义？(2007.05) |
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答：This can occur when you are streaming data but not servicing the queue often enough. For example, if your application was running and virus detection software took over the CPU, you may not get your time slice to service the queue. Or, if you are streaming and are not careful to stop streaming and empty the queue before closing a channel, the queue could fill up. It could also simply be that your own app is busy doing other things and not allowing you the time to service the queue - for example if another thread takes control and does not let channel 10 get a chance to execute its stream in code.
Basically, the event queue is full, and when a new event comes in, it cannot be fit into the queue so it is dropped. Depending on the event that was dropped, this could cause you to miss a recording.
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| 16. |
系统日志提示FIFO route err NGX brd x1 and QFul routing xf41d to iSmi x0的含义？
(2007.05) |
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答：The board(s) generates a hardware interrupt. The interrupt service routine runs and reads the data off of the board correctly. The driver transfers this data (specifically NGX D-Channel events) to the DLL, by coping the data packets into the board queue of the DLL. This copy failed. The DLL's queue was full, so the driver had no place to write this information.
These errors are usually caused by the same symptoms as the encode queue overflow. See that section of my reply for the possible causes of these messages. These are more due to the CPU bottleneck issues.
These errors could be related to one another. For example, one error could cause another to occur. I have ordered these by priority. You should take a look at the first error message first.
The CRC errors and the encode queue overflows seem to occur first followed by the QFUL and FIFO errors. Cleaning up the first two could cause the latter two to clean up as well.
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| 17. |
1块IPX-C卡支持几块IPM卡？ 连接方式？
(2007.05) |
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答：1.IPX-C目前是256通道，计划不断升级容量。因为IPX-C可以路由语音甚至视频数据到任意网络地址和端口，从原理上IPX-C是不限制发送数据到多少块IPM的，不过根据通道数来计算，可以定义为，1块IPX-C支持2块IPM260.
2.IPM最大240个通道资源，全双工，双通道能录音120路，三通道录音80路如果混合2，3通道模式，根据实际环境，动态分配通道资源录音，将支持80至120通道之间。只有全部使用3通道录音时，1块IPX-C才需要3块IPM260配合。
3.IPX-C interface 0(挡板最下放网口)为发送网口，将该网口连接到Switch上，就可以发送数据给任意网络地址和端口。如果只配合一块IPM可以使用交叉网线直联。
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| 18. |
IPX卡上网口如何对应设置里的Interface 0，1，2？
(2007.05) |
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答：Interface-0 对应IPX卡最下方的单独网口，其他则对应两个并在一起网口
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| 19. |
针对AVAYA IP话机，如何设置？(2007.05) |
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答：默认情况选择MT_IP_AVAYA，MT_TCP1=1720,MT_TCP2=1719
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| 20. |
在SmartView如何测试IPX板卡？(2007.05) |
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答：1.运行smartview-->system-->F2，点击VOIP->MTIP(Enable/Disable)Signaling Protocol，Board选0，Protocol ID:MT_IP_CISCO_SKINNY，Port输入2000，Type选择TMT_TCP，只选择一个就可以了，再点击Enable。
2.再运行VOIP-->MTIP(Dchannel/CC) Event (Control/Status)...->Protocol ID选择刚才的MT_IP_CISCO_SKINNY，将D-channel 和Call Control选项打钩。
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