Communication Devices; Connecting A Modem Cable - HP COMPAQ 309971-002 Hardware Manual

Connecting a Modem Cable

A modem cable, which has a 6-pin RJ-11 connector at each end,
must be connected to an analog telephone line with, in some
countries, the use of a country-specific modem adapter. Modem
cables are provided with most notebooks, but they may also be
purchased separately from most electronics retailers. Some
notebooks may have been purchased without an internal modem.
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WARNING: Connecting the notebook to a digital line can
permanently damage the modem. Immediately disconnect your modem
cable if it is accidentally connected to a digital line.
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CAUTION: Jacks for digital PBX systems might resemble analog
telephone jacks but are not compatible with the modem.
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CAUTION: Built-in modems may not work with multiple phone lines
or a private branch exchange (PBX). They cannot be connected to a
coin-operated telephone, and they do not work with party lines. Some
of these connections may result in excess electrical voltage and could
cause a malfunction in the internal modem. Check your telephone line
type before connecting your phone line.
Hardware Guide

Communication Devices

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