NEC OP-720-69001 User Guide - Page 20

3-6 RealPort Ethernet 10/100+Modem 56 User's Guide Symptoms and Possible Causes Windows NT or the Xircom CountrySelect software fails to detect a Xircom modem. These conditions can be caused by the lack of an available COM Port, by a resource conflict with another device, or by use of the wrong modem INF file during the installation. Possible Solutions 1 Use the steps under Troubleshooting Network Installation to modify the interrupt and/or memory address for the Xircom card until no conflicts are reported. 2 If your computer has an infrared communications port, disable it. These ports often use COM port resources required for other devices. Most infrared ports may be disabled from within the computer's CMOS or BIOS setup program, or with a hardware setup utility is used. See your computer documentation. 3 It is possible, though unlikely, that the computer may not have an available COM port for the modem. You may need to disable a COM port device to free a port for the modem. Before you attempt this, consult the computer hardware manufacturer for information on the possible consequences. 4 For 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.