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4
Using the Portable Desktop PC
Modem and Network Connections
The built-in modem and network model comes with both an RJ-11 and an RJ-45 port. RJ-11 telephone
cables have two or four wires and are used to connect telephones to telephone outlets found in the walls of
residential homes and some commercial buildings (some commercial buildings may have telephone wiring
designed for dedicated phone systems that may not be compatible). RJ-45 network cables are found
connecting network computers to network hubs or switches usually found in business environments.
NOTE: The built-in modem and network cannot be installed later as an upgrade. Modem
and/or network can be installed as a PC card (PCMCIA).
WARNING! Only use analog telephone outlets. The built-in modem does not support
the voltage used in digital phone systems. Do not connect the RJ-11 to digital phone
systems found in many commercial buildings or else damage will occur!
Modem Connection
The telephone wire used to connect the Portable Desktop PC's internal modem should have either two
or four wires (only two wires (telephone line #1) is used by the modem) and should have an RJ-11
connector on both ends. Connect one end to the modem port and the other end to an analog telephone
wall socket (the ones found in residential buildings). Once the driver is setup, the modem is ready to
use.
NOTE: When you are connected to an online service, do not place the Portable Desktop
PC in suspend (or sleep mode) or else you will disconnect the modem connection.
Modem Protocols
The Portable Desktop PC with internal modem complies with JATE (Japan), FCC (US, Canada, Korea,
Taiwan, and others), and CTR21 (see related pages for supported countries) for almost worldwide protocol
support.
This is an example of the Portable Desktop PC connected to a telephone jack for use with the
built-in modem.
44
CAUTION:
For electrical safety
concerns, only use
telephone
cables
rated
26AWG
or
higher. (see Glossary
for more information)
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