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| Home >> Modems & Low Profile >> |
Fax/Modem Troubleshooting TipsYou are encouraged to make links to this article from your website and tell your friendsThe following general-purpose advises are provided as a free service to our customers and visitors. Actual procedure may vary among brands. Read your product user manual carefully before any work. Directron.com is not responsible for any damage as a result of following any of these advises. You are welcome to distribute these tips free to your friends and associates as long as it's not for commercial purposes. My modem is a 56K, but I can connect to the Internet only at slower speed. The current copper wired telephone lines are limited only to about 53K. If you are connected only to 33.6 or 28.8K, check the following first:
This occurs most often when connecting to a UNIX system. In most case, the host does not prefer to see any result or command echo codes. If this is the case, the codes can be disabled by adding E0 Q1 to the modem configuration string. The modem dials and appears to complete the connection, but the communications software does not enter the correct mode. (The screen remains blank) This is normally caused by an I/O address or IRQ conflict. Verify that the COM port is not in use by any other serial device and if necessary use another COM port or I/O address settting. Refer to your computer manual on how to determine what serial ports are installed. The modem dials and appears to complete the connection, but the communications software does not enter the correct mode. (The screen remains blank)
The auto answer mode is determined by the S0 register. If S0 has been set to 0, the modem will not answer. Asign another value to S0 by entering the following command: S0=n, where n = the number of rings to occur before the call is answered (ATS0=2, the modem answers after two rings) The modem always answers the phone. Set the S0 register to 0. ATS0=0. The communications software displays, "No Dialtone." Make sure that your phone cable is working properly and that it is firmly seated to the phone socket at your phone jack and in the real panel of the modem. A high pitched squeal is emitted from the external speakers This phenomenon is "feedback" and occurs when the microphone is pointed at the external speaker or is close enough to pick up the speaker output. This may be remedied by using a unidirectional microphone, making sure that it is pointed away and as far from the speaker as functionally possible. Another option is to use a headset with an attached microphone. If a problem persists, please search for a solution or post a question in our tech support forum in our Help Desk. If you find this article useful, please create a link to it from your website or tell a friend about it. If you have any comments or suggestions about this article, please email information@directron.us | Video Card | Sound Card | Motherboard | Network Card | Fax/Modem | | Case/Power Supplies | Small Network | Maintain a System | Go to Top | | Home | Help Desk | Other Resources | Copyright 1997-2008 Directron.com. All rights reserved |
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