Compaq 1700 Armada 1700 Family of Personal Computers Reference Guide - Page 70

Connecting the Modem To connect the modem to a standard telephone wall jack: ! WARNING: To reduce the risk of electrical shock, always ensure that the modem line is disconnected from the telephone network when opening the equipment’s enclosure. 1. Connect one end of the modem cable into the RJ-11 jack on the right side of the computer. IMPORTANT: The internal modem uses a universal DAA (Direct Access Arrangement) that supports multiple countries. However, some countries may require an adapter to connect the modem to the telephone wall jack. The modem cable includes EMI suppression circuitry near the end of the computer. For continued EMI emissions compliance, plug that end of the cable into the computer. 2. Plug the opposite end of the cable into a standard telephone wall jack. IMPORTANT: Wall jacks for digital PBX systems may resemble standard telephone jacks but are not compatible with analog devices such as modems. Be sure the modem cable is connected to a regular analog phone line. Plugging the modem into a digital line will result in no dial tone and is not recommended. The modem includes protective circuitry against the digital lines producing excess current. Understanding How the Modem Works The modem serves two major functions: s The data communications function allows your computer to send information to and receive information from an online service, a host mainframe computer that provides electronic mail, and even other personal computers. s The facsimile function allows your computer to both send and receive text and images from facsimile (fax) machines or other computers. 7-2 Using the Internal Modem