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DEFINITY Enterprise Communications Server Release 6
Installation and Test for Multi-Carrier Cabinets
555-230-112
Issue 5
May 1998
Glossary and Abbreviations
Page GL-46
Station Message Detail Recording (SMDR)
An obsolete term now called CDR — a switch feature that uses software and hardware to record
call data. See Call Detail Recording (CDR)
.
standard serial interface (SSI)
A communications protocol developed for use with 500-type business communications terminals
(BCTs) and 400-series printers.
status lamp
A green light that shows the status of a call appearance or a feature button by the state of the light
(lit, flashing, fluttering, broken flutter, or unlit).
stroke counts
A method used by ACD agents to record up to nine customer-defined events per call when CMS is
active.
SVN
Security-violation notification
switch
Any kind of telephone switching system. See also communications system
.
switchhook
The buttons located under the receiver on a voice terminal.
switch-node (SN) carrier
A carrier containing a single switch node, power units, and, optionally, one or two DS1 converter
circuit packs. An SN carrier is located in a center-stage switch.
switch-node (SN) clock
The circuit pack in an SN carrier that provides clock and maintenance alarm functions and
environmental monitors.
switch-node interface (SNI)
The basic building block of a switch node. An SNI circuit pack controls the routing of circuit,
packet, and control messages.
switch-node link (SNL)
The hardware that provides a bridge between two or more switch nodes. The SNL consists of the
two SNI circuit packs residing on the switch nodes and the hardware connecting the SNIs. This
hardware can include lightwave transceivers that convert the SNI’s electrical signals to light
signals, the copper wire that connects the SNIs to the lightwave transceivers, a full-duplex
fiber-optic cable, DS1 converter circuit cards and DS1 facilities if a company does not have rights
to lay cable, and appropriate connectors.
switch-processing element (SPE)
A complex of circuit packs (processor, memory, disk controller, and bus-interface cards) mounted
in a PPN control carrier. The SPE serves as the control element for that PPN and, optionally, for one
or more EPNs.
SXS
Step-by-step
synchronous data transmission
A method of sending data in which discrete signal elements are sent at a fixed and continuous rate
and specified times. See also association
.
SYSAM
System Access and Administration