Cabletron Systems CSX100 series User Manual - page 141
Glossary
127
Packet
A piece of information sent across the network that includes a header and
usually user data.
Ping
An echo message, available within the TCP/IP protocol suite, sent to a remote
node and returned; used to test the accessibility of the remote node.
POTS
Plain Old Telephone Service referring to standard analog telecommunication.
PPP (Point-to-Point Protocol)
A Data Link layer protocol that provides asynchronous and synchronous
connectivity between computer/network nodes. Includes standardization for
security and compression negotiation.
Q.921
ISDN data link layer specification for the user-to-network interface.
Q.931
ISDN specification for call set-up and signaling on ISDN connections.
RFC
Request for Comment. Documentation describing Internet communications
specifications (e.g. Telnet, TFTP). Often these RFCs are used to achieve
multi-vendor interoperability during implementation.
RJ11
Standard 4-wire connectors for telephone lines.
RJ45
Standard 8-wire connectors used for ISDN lines.
Router Information Protocol
Protocols used in IP and IPX for broadcasting open path information between
routers to keep routing tables current.
Routing
A network layer function which determines the path for transmitting packets
through a network from source to destination.
RS-232
EIA standard specifying the physical layer interface usedto connect adevice
to communications media.