YML780 Rev1
NB1 User Guide
www.netcomm.com.au
85
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 and ver-
sion 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 usu-
ally uses this type of connector.
routing
Forwarding data between your network and the Internet
on the most efficient route, based on the data’s destina-
tion 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 avail-
able. See DNS.
SNMP
Simple
Network
Management
Protocol
The
TCP/IP
proto-
col 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 compa-
ny. 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 split-
terless; 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 dis-
tinguished 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.
