Fore Systems forerunner series, Configuration Manual

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Glossary - 30
ForeRunner ATM Switch Network Configuration Manual
Glossary
Semipermanent Connection -
a connection established via a service order or via network man-
agement.
Serial Line IP (SLIP) -
A protocol used to run IP over serial lines, such as telephone circuits or
RS-232 cables, interconnecting two systems.
Service Access Point (SAP) -
the point at which an entity of a layer provides services to its LM
entity or to an entity of the next higher layer.
Service Data Unit (SDU) -
a unit of interface information whose identity is preserved from one
end of a layer connection to the other.
Service Specific Connection Oriented Protocol (SSCOP) -
an adaptation layer protocol defined
in ITU-T Specification: Q.2110.
Service Specific Convergence Sublayer (SSCS) -
The portion of the convergence sublayer that
is dependent upon the type of traffic that is being converted.
Session Layer -
Layer 5 in the OSI model that is responsible for establishing and managing ses-
sions between the application programs running in different nodes.
Severely Errored Seconds (SES) -
a second during which more event errors have occurred than
the SES threshold (normally 10-3).
Shaping Descriptor -
n ordered pairs of GCRA parameters (I,L) used to define the negotiated
traffic shape of an APP connection. The traffic shape refers to the load-balancing of a network,
where load-balancing means configuring data flows to maximize network efficiency.
Shielded Pair -
Two insulated wires in a cable wrapped with metallic braid or foil to prevent
interference and provide noise free transmission.
Shielded Twisted Pair (STP) -
two or more insulated wires, twisted together and then wrapped
in a cable with metallic braid or foil to prevent interference and offer noise-free transmissions.
Signaling System No. 7 (SS7) -
The SS7 protocol has been specified by ITU-T and is a protocol
for interexchange signaling.
Simple and Efficient Adaptation Layer (SEAL) -
also called AAL 5, this ATM adaptation layer
assumes that higher layer processes will provide error recovery, thereby simplifying the SAR
portion of the adaptation layer. Using this AAL type packs all 48 bytes of an ATM cell infor-
mation field with data. It also assumes that only one message is crossing the UNI at a time.
That is, multiple end-users at one location cannot interleave messages on the same VC, but
must queue them for sequential transmission.
Simple Gateway Management Protocol (SGMP) -
the predecessor to SNMP.
Simple Mail Transfer Protocol (SMTP) -
the Internet electronic mail protocol used to transfer
electronic mail between hosts.
Simple Network Management Protocol (SNMP) -
the Internet standard protocol for managing
nodes on an IP network.