Toshiba Portege M750 PPM75C-0S704R Users Manual Canada; English - Page 157

Operating Basics Connecting the modular cable To connect the modem's modular cable, follow the steps as detailed below: ■ Connection to any communication line other than an analog phone line could cause a computer system failure. ■ Connect the built-in modem only to ordinary analog phone lines. ■ Never connect the built-in modem to a digital line (ISDN). ■ Never connect the built-in modem to the digital connector on a public telephone or to a digital private branch exchange (PBX). ■ Never connect the built-in modem to a key telephone system for residences or offices. ■ Never operate your computer on AC power during a thunderstorm. If you see lightning or hear thunder, immediately turn off the computer. An electric surge caused by the storm, may result in a system failure, loss of data or hardware damage. 1. Plug the end of the modular cable into the computer's modem jack. 2. Plug the other end of the modular cable into a telephone jack. Modem jack Telephone jack Figure 4-29 Connecting the internal modem Do not pull on the cable or move the computer while the cable is connected. If you use a storage device such as an optical drive or hard disk drive connected to a 16-bit PC Card, you might experience the following problems with the operation of the modem: ■ The modem speed is slow or communication is periodically interrupted. ■ Skips or jumps may be noted in sound. Disconnecting the modular cable To disconnect the modular cable, follow the steps as detailed below: 1. Pinch the lever on the plug in the telephone jack and pull it out from within the connector. User's Manual 4-52