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150 SBG1000 User Guide
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Configuration: Basic Gateway TCP/IP Wireless Print Server USB
R
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RAS Remote Access Server
registration How a cable modem makes itself known to the CMTS. The cable modem configuration file and
authorization are verified and the CoS is negotiated.
return loss A measurement of the quality of the match of the device to the cable system. Return loss is the ratio of
the amount of power reflected by the device. A return loss of 20 dB or greater is preferred.
RF Radio Frequency — signals used by the CMTS transmitter and receiver to send data over HFC. The
carrier is modulated to encode the digital data stream for transmission across the cable network.
RFC Request for Comments published on the IETF or other websites. Many RFCs become international
standards.
RJ-11 The most common type of connector for household or office phones.
RJ-45 An 8-pin modular connector; the most common connector type for 10Base-T or 100Base-T Ethernet
networks.
ROM read-only memory
router On IP networks, a device connecting at least two networks, which may or may not be similar. A router
is typically located at a gateway between networks. A router operates on OSI network layer 3. It filters
packets based on the IP address, examining the source and destination IP addresses to determine the
best route on which to forward them.
A router is often included as part of a network switch. A router can also be implemented as software
on a computer.
routing table A table listing available routes that is used by a router to determine the best route for a packet.
RTS request to send