Multitech MultiModem MT5634ZBA-V-V92 Guía de usuario descargar pdf (Pagina 26)

Chapter 7 – Troubleshooting

26 Multi-Tech Systems, Inc. MT5634ZBA-Series User Guide (S000286H)

● Are you trying to send a file to another client modem? If so, then your maximum possible connect speed is 33,600 bps.

You can upload at speeds up to 48,000 bps only when connected to an ISP that supports the V.92 protocol.

● Try entering the I11 command or the &V command in command mode to display information about the last connection,

making a screen print of the connection statistics, and checking for parameters that might be unacceptable.

Data is Being Lost

● If you are using data compression and a high speed serial port, set the serial port baud rate to two to six times the data

rate.

● Make sure the flow control method you selected in software matches the method selected in the modem.

● Try entering the I11 command or the &V command in command mode to display information about the last connection,

making a screen print of the connection statistics, and checking for parameters that might be unacceptable.

There are Garbage Characters on the Monitor

● Your computer and the remote computer might be set to different word lengths, stop bits, or parities. If you have

connected at 8-N-1, try changing to 7-E-1, or vice-versa, using your communication software.

● You might be experiencing line noise. Enable error correction, if it is disabled, or hang up and call again; you might get a

better connection the second time.

● At speeds above 2400 bps, the remote modem might not use the same transmission or error correction standards as your

modem. Try connecting at a slower speed or disabling error correction. (With no error correction, however, line noise can

cause garbage characters.)

● Try entering the I11 command or the &V command in command mode to display information about the last connection,

making a screen print of the connection statistics, and checking for parameters that might be unacceptable.

The Modem Doesn’t Work with Caller ID

● Caller ID information is transmitted between the first and second rings, so if autoanswer is turned off (S0=0) or if the

modem is set to answer after only one ring (S0=1), the modem will not receive Caller ID information. Check your

initialization string, and if necessary change it to set the modem to answer after the second ring (S0=2).

● Make sure that you have Caller ID service from your telephone company.

Note: The modem supports US Bellcore standard caller ID only.

Fax and Data Software Can’t Run at the Same

Time

● Communication devices can be accessed by only one application at a time. In Windows 2000 and higher, you can

have data and fax communication applications open at the same time, but they cannot use the same modem at the

same time.

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Multitech MultiModem MT5634ZBA-V-V92 Guía de usuario Pagina 26