3Com HomeConnect 3CP4130 User Manual page 45

A virtual circuit that is permanently available. The only difference between a
PVC and a switched virtual circuit (SVC) is that an SVC must be re-established
each time data is to be sent. Once the data has been sent, the SVC disappears.
PVCs are more efficient for connections between hosts that communicate
frequently.
RFC
Short for Request for Comments, a series of notes about the Internet, started in
1969. An RFC can be submitted by anyone. Eventually, if it gains enough
interest, it may evolve into an Internet standard. RFC-1483 is the protocol
traditionally used for ATM networks. Each RFC is designated by an RFC
number. Once published, an RFC never changes. Modifications to an original
RFC are assigned a new RFC number.
RFC-1483
This is a protocol used for ATM networks. It's a very efficient channel or path for
data transmission. It differs from PPPoE and PPP in that it doesn't provide any
built-in negotiation for addresses or connection.
RJ-11 Jack
Short for Registered Jack-11, a four- or six-wire connector used primarily to
connect telephone equipment in the United States. RJ-11 connectors are also used
to connect some types of local-area networks (LANs), although RJ-45 connectors
are more common.
RJ-45 Jack
Short for Registered Jack-45, an eight-wire connector used commonly to connect
computers onto local-area networks (LANs), especially Ethernets. RJ-45
connectors look similar to the ubiquitous RJ-11 connectors used for connecting
telephone equipment, but they are somewhat wider.
SDSL (symmetric digital subscriber line)
SDSL is called symmetric because it supports the same data rates for upstream
and downstream traffic. A similar technology that supports different data rates for
upstream and downstream data is called asymmetric digital subscriber line
(ADSL). ADSL is more popular in North America, whereas SDSL is being
developed primarily in Europe
TCP (Transmission Control Protocol)
TCP is one of the main protocols in TCP/IP networks. Whereas the IP protocol
deals only with packets, TCP enables two hosts to establish a connection and
exchange streams of data. TCP guarantees delivery of data and also guarantees
that packets will be delivered in the same order in which they were sent.
TCP/IP (Transmission Control Protocol/Internet Protocol)
The communications protocols used to connect hosts on the Internet. TCP/IP is
built into the UNIX operating system and is used by the Internet, making it the de
facto standard for transmitting data over networks. Even network operating
systems that have their own protocols support TCP/IP.
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