ATL Telecom AM30 - Manual (Page 170)

170 ATL Telecom User Guide
AM30
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.
SNMP Simple Network Management Protocol
The TCP/IP protocol used for network management.
splitter A device that splits off the voice component of the DSL signal to a separate line, so that
data and telephone service each have their own wiring and jacks. The splitter is installed by your
telephone company where the DSL line enters your home. The CO also contains splitters that
separate the voice and data signals, sending voice to the PSTN and data on high-speed lines to
the Internet. See also CO, PSTN, splitterless, microfilter.
splitterless
A type of DSL installation where no splitter is installed, saving the cost of a
service call by the telephone company. Instead, each jack in the home carries both voice and
data, requiring a microfilter for each telephone to prevent interference from the data signal. ADSL
is usually splitterless; if you are unsure if your installation has a splitter, ask your DSL provider.
See also splitter, microfilter.
subnet A subnet is a portion of a network. The subnet is distinguished from the larger network by
a subnet mask which selects some of the computers of the network and excludes all others. The
subnet's computers remain physically connected to the rest of the parent network, but they are
treated as though they were on a separate network. See also network mask.
subnet mask
A mask that defines a subnet. See also network mask.
TCP See TCP/IP.
TCP/IP Transmission Control Protocol/Internet Protocol
The basic protocols used on the Internet. TCP is responsible for dividing data up into packets for
delivery and reassembling them at the destination, while IP is responsible for delivering the
packets from source to destination. When TCP and IP are bundled with higher-level applications
such as HTTP, FTP, Telnet, etc., TCP/IP refers to this whole suite of protocols.
Telnet An interactive, character-based program used to access a remote computer. While HTTP
(the web protocol) and FTP only allow you to download files from a remote computer, Telnet
allows you to log into and use a computer from a remote location.
TFTP
Trivial File Transfer Protocol
A protocol for file transfers, TFTP is easier to use than File Transfer Protocol (FTP) but not as
capable or secure.
TTL
Time To Live
A field in an IP packet that limits the life span of that packet. Originally meant as a time duration,