Xircom RM56V1 manual Troubleshooting Modem Setup, Symptoms and Possible Causes, Possible Solutions

Windows NT 4.0 Installation 3-3

Troubleshooting Modem Setup

Modem difficulties can usually be traced to interrupt, I/O address or communications port conflicts. A modification to the Windows NT 4.0 default communication drivers or physical damage to card or cables can also be the source of problems.

Symptoms and Possible Causes

Windows NT fails to detect a Xircom modem. These conditions can be caused by the lack of an available COM Port, or by a resource conflict with another device.

Possible Solutions

1Modify the interrupt and/or I/O address for the Xircom card until no conflicts remain.

2If your computer has an infrared communications port, disable it. These ports often use COM port resources required for other communications devices. Most infrared ports may be disabled from within the computer’s CMOS or BIOS setup program. On some computers a hardware setup utility is used. See your computer documentation.

3For difficulties in connecting to specific sites such as your Internet Service Provider, or company remote access locations, verify with the support personnel at the respective locations that your client software and dial-in communications software are configured properly.