Chapter
18
. Appendix G Glossary
SAR715PVW ADSL Ethernet Router User’s Guide
200
ping
Packet Internet (or Inter-Network) Groper
A program used to verify whether the host associated with an IP
address is online. It can also be used to reveal the IP address for
a given domain name.
port
A physical access point to a device such as a computer or
router, through which data flows into and out of the device.
POTS
Plain Old Telephone Service
Traditional analog telephone service using copper telephone
lines. Pronounced "pots."
See also PSTN
.
POTS splitter
See splitter
.
PPP
Point-to-Point
Protocol
A protocol for serial data transmission that is used to carry IP
(and other protocol) data between your ISP and your computer.
The WAN interface on the SAR715PVW uses two forms of PPP
called PPPoA and PPPoE.
See also PPPoA, PPPoE
.
PPPoA
Point-to-Point Protocol over ATM
One of the two types of PPP interfaces you can define for a
Virtual Circuit (VC), the other type being PPPoE. You can define
only one PPPoA interface per VC.
PPPoE
Point-to-Point Protocol over Ethernet
One of the two types of PPP interfaces you can define for a
Virtual Circuit (VC), the other type being PPPoA. You can define
one or more PPPoE interfaces per VC.
protocol
A set of rules governing the transmission of data. In order for a
data transmission to work, both ends of the connection have to
follow the rules of the protocol.
remote
In a physically separate location. For example, an employee
away on travel who logs in to the company’s intranet is a remote
user.
RIP
Routing Information Protocol
The original TCP/IP routing protocol. There are two versions of
RIP: version I and version II.
RJ-11
Registered Jack Standard-11
The standard plug used to connect telephones, fax machines,
modems, etc. to a telephone jack. It is a 6-pin connector usually
containing four wires.
RJ-45
Registered Jack Standard-45
The 8-pin plug used in transmitting data over phone lines.
Ethernet cabling usually uses this type of connector.
routing
Forwarding data between your network and the Internet on the
most efficient route, based on the data’s destination IP address
and current network conditions. A device that performs routing is
called a router.
rule
See filtering rule, NAT rule
.
SDNS
Secondary Domain Name System (server)
A DNS server that can be used if the primary DSN server is not
available.
See DNS
.
