HP Nc4000 Hardware Guide: HP Compaq Notebook nc4000 Series - Page 66
Communication Devices, Connecting a Modem Cable
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6 Communication Devices 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. Jacks for digital PBX systems may resemble analog telephone jacks, but are not compatible with the modem. WARNING: Connecting the notebook to a digital line can permanently damage the modem. Immediately disconnect your modem cable if accidentally connected to a digital line. If the modem cable contains noise suppression circuitry, which prevents interference from TV and radio reception, orient the circuitry end of the cable toward the notebook. RJ-11 modem cable with noise suppression circuitry Hardware Guide 6-1
6
Communication Devices
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. Jacks for digital
PBX systems may resemble analog telephone jacks, but are not
compatible with the modem.
WARNING:
Connecting the notebook to a digital line can
permanently damage the modem. Immediately disconnect your
modem cable if accidentally connected to a digital line.
If the modem cable contains noise suppression circuitry, which
prevents interference from TV and radio reception, orient the
circuitry end of the cable toward the notebook.
RJ-11 modem cable with noise suppression circuitry
Hardware Guide
6-1