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Glossary glo-5
Frame relay
is transmission of data in a format that combines level 2 and level 3 functionality, but
provides connection information only for level 2.
FRX
is a Cabletron product line (FRX4000, FRX6000) that can connect to and interact with
a SmartSwitch 1800. The full names for these products are Netlink FRX4000 and
Netlink FRX6000.
FXO
is a voice configuration that interfaces with two-wire telco switching equipment; e.g.,
a central office or the station side of an analog PBX. The SmartSwitch 1800 can be
configured for FXO by setting the Voice port parameter
Telephony Interface Type
to
OPX
.
FXS
is a voice configuration that interfaces with two-wire telco equipment such as tele-
phones. The SmartSwitch 1800 can be configured for FXS by setting the Voice port
parameter
Telephony Interface Type
to
SLT
.
G
Gateway
is a port that provides access to a “foreign” network (one that is not part of the local
network).
H
HPAD
is an integral (to a SmartSwitch 1800) SNA or BSC PAD connected to a host.
Hunt group
is a designated group of ports that share incoming calls according to a pre-defined
algorithm.
I
ICMP
stands for “internet control message protocol,” which handles IP error and control
messages. Gateways and hosts use ICMP to report problems concerning datagrams
back to the source.
Internet
is an interconnected group of packet-switching networks, joined by gateways sup-
porting the TCP/IP protocol. The term also refers to the DARPA (Defense Advanced
Projects Research Agency) Internet.
Internet Protocol
is the Internet standard protocol that defines the datagram as the basic unit of data
transmitted across the internet.
IP
stands for “internet protocol.”