Motorola SM56 用户手册

2.   Try another ISP number, the server could be busy. 
 
 

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1.   This usually occurs when the ISP, Internet, or streaming host side server is busy and there are 

many users competing for bandwidth. It is not a modem problem. 

 
 

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peakerphone quality using Direct X

 
If you are using the soft-speakerphone version of the SM56 (that uses Windows Direct X and the 
PC sound system instead of dedicated voice hardware on the modem board, i.e. no speaker and 
microphone jacks on the modem board), and the quality is poor refer to section 10, "Improving 
Direct X Speakerphone Performance and Quality" for some hints and tips.  
 

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When dialing a remote system that requires you to enter selections using the telephone keys, such 
as a voice-mail depot or bank-account information provider, you can lengthen the duration of the 
tones your modem sends, so that the remote system can detect them better.  To adjust DTMF tone 
length, use the AT+VTDn command, where n specifies the tone duration. Check the SM56 online 
Help (via the SM56 Helper application on the Windows Desktop Tray) for a list of supported AT 
Commands. 
 

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1.   Ensure that your communications software is configured to use the same COM port as the 

modem's COM port. 

2.   Reset modem parameters to default options by entering AT&F; then re-enter custom options. 
 
 

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1.    Usually this is because the local echo is turn OFF. Turn it on by issuing ATE1 and hit <Enter>. 
 
 

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1.   In the Windows desktop tray, select Start.  
2.   Select Help. The Windows Help Topics window appears. 
3.   Select the Contents tab. 
4.   Select If You Have a Hardware Conflict. 
5.   A series of troubleshooting actions appears.  Follow the appropriate sequence.