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S - secret

S-HTTP - Secure Hypertext Transfer Protocol

S - Interface - The electrical interface between the NT-1 and the Terminal Adapter or other ISDN equipment. ISDN equipment with built-in NT1Õs do not necessarily provide access to the S interface. Multiple devices can share an NT-1 by connecting on the S interface. Also known as the S passive bus.

S-A - satellite access

S - compartmented key

S&F - store and forward

S/EWCC - signals intelligence/electronic warfare coordination center

S/N - signal to noise ratio

S1 - Adjutant (US Army)

S2 - Intelligence Officer (US Army)

S2M - European term for ISDN PRI. See PRI and ISDN 30.

S3 - stand-alone shared storage

S3 - Operations and Training Officer (US Army)

S4 - Supply Officer (US Army)

S6 - Communications Officer (US Army)

SA - selective availability (GPS)

SA - situational awareness

SA - system administrator

SA Trunk Module - This module provides symmetric and asymmetric trunking capabilities (asymmetric means that the transmit and receive rates do not have to be the same on the trunk).

SA - symmetric/asymmetric

SA - standalone

SA-TRK - symmetric/asymmetric trunk

SA - Security Administrator

SAA - satellite access authorization

SAA - SIPRNET Access Authorization

SAAS - standard ammunition automated system

SABER - situational awareness beacon with reply

SABI - secret and below interoperability

SABM - set asynchronous balanced mode

SAC - service access code

SACCS - strategic automated command and control systems (Navy)

SACK - selective acknowledgement

SACS - secure access control system

SACS - satellite mission control subsystem

SADL - situational awareness data link

SADT - structured analysis and design technique

SAG - SQL access group

SAILS - standard Army installation logistics system

SAIRS - standardized advanced infrared system

SAISS - Subcommittee on Automated Information Systems Security

SAL - security access level

SALTS - streamlined alternative logistic transmission system

SAM - self-assembled monolayers

SAM - software asset management

SAM - SPEED Application Manager

SAME - SQL Ada module extension

SAMEDL - SQL Ada module extension description language

SAMMS - standard automation material management system

SAMP - Security/Accreditation Management Plan

SAMP - Security Association Management Protocol

Sampling Rate - The rate per unit of time at which samples are taken of a particular waveshape's amplitude.

SAN - storage area network

SAP - survivable adaptive planning

SAR - Synthetic Aperture Radar

SAR - (Segmentation and Reassembly) - A method of breaking up arbitrarily sized packets. Source: ATM Forum.

SAR - satellite access request

SAR/MTI - Synthetic Aperture Radar and Moving Target Indicator

SARK - Saville Advanced Remote Keying

SAS - survivable adaptive systems

SAS - second antenna system

SASD - server-attached storage device

SASS - SIGINT analysis and simulation system

SASS - Systems Acquisition Support Services (DIA)

SAT - security audit trail

SAT - satellite

SAT-R - standard AUTODIN terminal-GENSER

SAT-Y - standard AUTODIN terminal-DSSCS

SATAN - Security Administrator Tool for Analyzing Networks

SATCOM - satellite communication

Satellite Communications - The use of geostationary orbiting satellites to relay transmission from one earth station to others.


SATPLAN - Satellite Planner

SATR - Synthetic Aperture Targeting Radar

SAU - servo amplifier unit

SAW - surface acoustic wave

SB - switchboard

SB - small board

SBC - single board computer

SBC - Signaling Buffer Controller

SBCC - Signaling Buffer Controller Card

SBI - (Shelf Bus Interface) Card - This card on the Promina HSS-2 shelf is the interface between the SX-2 module and the other modules in the shelf. There is an SBI A card and an SBI B card for redundancy.

SBIRS - Space-Base infrared system

SBIS - Sustaining Base Information Services

SBLC - standard base-level computer

SBM - Satellite Broadcast Manager

SBM - Satellite Broadcast Manager

SBPSK - shaped beam phase shift keying

SBU - sensitive but unclassified

SC - single channel

SC - system controller

SC - Signal Corps

SC - switched connected

SC - station clock

SCADA - supervisory control and data acquisition

SCAMP - Single Channel Antijam ManPortable Terminal

SCAMPI - single channel anti-jam manportable interface

SCC - serial communications controllers

SCC - specialized common carrier

SCC - standards coordinating committee

SCC - system control center

SCC-2 - system control center-2

SCCB - software configuration control board

SCCS - source code control system

SCD - standard color display

SCDL - surveillance control (common) data link

SCDU - signal conditioning and display unit

SCE - service control environment (AIN)

SCE - service creation environment

SCE - service cryptologic element

SCE - software capability evaluation

SCF - service control facility

SCG - switching control group

SCI - scaleable coherent interface

SCI - sensitive compartmented information

SCIF - sensitive compartmented information facility

SCIP - Society of Competitive Intelligence Professionals

SCLP - (Signaling Channel Link Protocol) - The SCLP (also known as the Signal Unit) provides a common channel signaling system that allows each node to communicate control and signal information with other nodes in a network. An SCLP channel is associated with every trunk in the network. In Promina networks SCLP is also used to transport IP Packets.

SCLP Task - All signaling and control information is transmitted between nodes on pre-defined trunk signaling channels called Signaling Channel Link Protocol (SCLP) channels. SCLP refers to the Layer 2 point-to-point protocol. An SCLP task exists for each trunk on a node to manage the Layer 2 protocol. This SCLP task also performs some Layer 3 routing functions.

SCM - software configuration management

SCM - spectrum certification module

SCM - Security Configuration Manager

SCMP - software configuration management plan

SCN - switched circuit network

SCO - Santa Cruz Operation

SCOMP - secure communications processor

SCOPS - security concept of operations

SCOTT - Single Channel Objective Tactical Terminal

SCP - service control point (AIN)

SCP - system control program

SCPC - single channel per carrier

SCPU - switch control processor unit

SCR - Silicon-Controlled Rectifier

SCRF - subchannel reassignment function

SCRIPS - Service Center Recognition Image Processing System (IRS)

SCS - survivable control system

SCS - stabilization and control subsystem

SCSI - small computer systems interface

SCSR - single channel signaling rate

SCSS - Service Center support system

SCTE - Source Clock Terminal Element

SD - send data

SD - switched DA

SDA - software disk array

SDA - system design architecture

SDC - signal data connector

SDC - signal data converter

SDD - Secure Data Device

SDD - software design document

SDE - Shared Data Environment

SDF - software development file

SDF - standard delay file

SDH - synchronous digital hierarchy

SDI - single document interface

SDK - software development kit

SDL - Software Development Library

SDLC - (Synchronous Data Link Control) - A bit-oriented, layer 2 protocol developed by IBM that is essentially the same as the ISO HDLC and the CCITT LAP-B, among others.

SDM - space-division multiplexing

SDM - sync detection module

SDMO - Specifications & Data Management Officer

SDMX - space division matrix

SDN - software defined network

SDN - SOF Deployable Node

SDNRI - secure digital net radio interface

SDNRIU - secure digital net radio interface unit

SDNS - secure data networking system

SDP - software development plan

SDP - service delivery plan

SDR - service denial records

SDRA - satellite digital radio service

SDRAM - synchronous DRAM

SDS - small digital switch

SDS - software development system

SDS - strategic data system

SDS - sysops distribution system

SDS - space division subscriber

SDSG - space division switching group

SDSL - Single-line, hi-bit-rate DSL

SDSL - symmetric digital subscriber line

SDSM - space division switching matrix

SDTS - spatial data transfer standard

SDU - storage device unit

SDVS - state delta verification system

SEAD - Suppression of Enemy Air Defenses

SEAL - segmentation and reassembly layer (protocol)

Sealing Current - Unlike telegraphy, teletypewriter and POTS lines, most digital lines (such as ISDN) use a voltage rather than current mode of operation. Sealing Current allows a controlled amount of current to be passed through a telecom circuit for purposes of "healing" damage caused by corrosion. Bellcore specifies sealing current on the ISDN U interface.

SEASTRAT - sealift strategic contingency planning system

SEAT - Seat Management (GSA/FTS)

sec - section

SEC - Software Engineering Center at Fort Monmouth, New Jersey.

Secam - System Electronique Couleur Avec Memoire

SECDEF - Secretary of Defense

SECOM - Software Engineering Cost Model

SEE - software engineering environment

SEE - softcopy exploitation system

SEGAT - secure gateway

SEI - Software Engineering Institute

SEI - specific emitter identification

SEL - secure electronic transactions

SEL - select

SELCALL - selective call

Selected Path - User-specified path for a call.

SEM - standard electronic module

SEM - Service Extension Module

SEMA - special electronic mission aircraft

SEN - Small Extension Node

SENS - small extension node switch

SEOC - systems engineering operations center

SEP - Signal Entry Panel

SEPG - Software Engineering Process Group

Serial Port - A device that converts parallel input to serial form, which is used in data transmission.

Serial Transmission - A method of information transfer in which the bits comprising a character are sent in sequence, one at a time.

SES - sales emulation system

Session Parameters - Specifies the Operator Interface environment for a particular operator ID.

SET - secure electronic transaction (protocol)

SET - Secure Encrypted Transaction

SET - software engineering technology

SETA - systems engineering and technical assistance

SETAMS - systems engineering, technical assistance, and management services

SEVAS - secure voice access system

SEVMS - security enhanced virtual memory system

SEW - scientific engineering workstation

SEW - Space, Electronic Warfare

SF - single frequency

SF - Superframe. A type of Line format supported on T1 circuits. The Telco determines the line format and line encoding of your line. ESF is the preferred Line Format on T1 circuits. See Line Format.

SF - store and forward or primary/connected RI

SFAF - standard frequency action format

SFi - spectral composition

SFOB - special forces operating base

SFQL - structured full-text query language

SFT - system fault tolerance

SFUG - security features userÕs guide

SFW - sensor fuzed weapons

SG - supergroup

SGDF - supergroup distribution frame

SGDSA - Shadow Global Directory System Agent

SGEN - signal (system) generator

SGL - single

SGLS - space-ground link subsystem

SGML - Standard Generalized (general) Markup Language

SGT - Sergeant

SHA - secure hash algorithm

SHADE - shared data environment

SHARES - Shared Resources for High Frequency Radio Program

SHD - special handling designator

Shelf - A shelf is a mechanical assembly that houses cards and a backplane.

SHF - super high frequency

Shielding - A means of controlling EMI from electronic components.

Shockwatch Indicators - Devices used during shipping to indicate whether the rated G-force (25-50 Gs) was exceeded during shipping.

SHS - secure hash standard

SHTU - simplified handheld terminal unit

SI - service interval

SI - special intelligence

SIA - Semiconductor Industry Association

SIB - system interface bus

SIC - standard industrial code

SICPS - Standard Integrated Command Post System

SICPS - Standardized Integrated Command Post Shelter

SID - secondary imagery dissemination

SID - semantic identifiers

SID - serial input data

SID - station ID

SIDF - System Independent Data Format (Association)

SIDR - Secure Intelligence Data Repository

SIDS - secondary imagery dissemination system

SIDT - store interrupt descriptor table

SIE - Standards Improvement Executives

SIE - systems integration environment

SIF - software integration facility

SIG - special interest group

SIG - signal

SIGC2 - signal command and control

SIGCEN - signal Center

SIGINT - signal intelligence

Signal Trace - This command is used to record all the signaling information (in a trace buffer) carried by the A-B bits relative to a specified port.

Signaling System Number 7 - Refers to the set of CCITT recommendations Q.701 through Q.741. Signaling System Number 7 is generally recognized as the common-channel signaling method used in an Integrated Services Digital Network (ISDN).

SIGO - signal officer

SIGSEC - signals security

SII - system internal interface

SIJ - signal initiated jamming

Silence - Suppression - See Statistical Multiplexing

SILO - signal intercept from low orbit

SILS - standard for interoperable LAN security

SIM - sensor interaction model

SIM - subscriber identity modules

SIMD - single instruction, multiple data

SIMLM - Single Integrated Medical Logistics Manager

SIMMS - single inline memory modules

SIMNET - simulation network

SIMO - Systeme Integration Management Office

SINAD - signal+noise+distortion noise+distortion

SINCGARS - Single-Channel Ground and Airborne Radio System

SINS - state-wide integrated narcotics system

SIO - serial input/output

SIO - Special Information Operations (DOD)

SIOP - Single Integrated Operational Plan

SIOP-ESI - Single Integrated Operational Plan-extremely sensitive information

SIP - system improvement plan

SIP - Session Initiation Protocol

SIPR - Secret Internet Protocol Router

SIPRNET - Secret Internet Protocol Router Network

SIR-C - space imaging radar C

SIRC - security incident response capability

SIRFC - suite of integrated radar frequency countermeasures

SIRST - Shipboard Infra-Red Search and Track

SISS - Subcommittee on Information Systems Security

SITTEMPS - situation templates

SIVVR - Software Independent Verification and Validation Report

SL - subscriber line

SLA - service level agreement

SLAR - side-looking airborne radar

Slash Commands - Expert mode commands that perform Operator Interface commands more quickly.

SLC - submarine laser communications

SLC - subscriber line charge

SLC - subscriber loop carrier

SLC-96 - A Subscriber Loop Carrier Circuit system manufactured by AT&T (now Lucent). SLC-96 has its own version of T1 framing between it and the CO. This interface is the Bellcore TR-008 or the newer GR-303 interface which are specialized versions of T1 intended to allow transparent transport of analog features such as Caller ID, Call Waiting, etc.

SLCM - sea launched cruise missile

SLCSE - software life cycle support environment

SLCT - similar line control terminal

SLD - system link designator

SLES - single line entry system

SLGR - small, lightweight global positioning system receiver (GPS)

SLIC - system-licensed internal code

SLIC - 1. Subscriber Line Interface Circuit, see Line Card. 2. The equipment used with the AT&T (Lucent) SLCC Subscriber Loop Carrier Circuit, a system used to multiplex a number of subscriber loops onto a single circuit to reduce fixed costs.

SLIP - (Serial Line Interface Protocol) - SLIP software allows Internet Protocol, normally used on Ethernet, to be used over a serial line (e.g., an RS-232 serial port connected to a remote access modem).

SLM - subscriber list management

SLOC - software lines of code

SLP - Service Logic Program

SLP - Service Location Protocol

SLSI - super large-scale integration

SLV - slave

SM - service message

SM - system management

SMART-T - Secure Mobile Antijam Reliable Terminal - Tactical

SMB - server message block

SMCS - satellite mission control subsystem

SMD - standard microcircuit drawing

SMD - surface mounted device

SMD - switch mux/demux

SMDPS - strategic mission data preparation system

SMDS - (Switched Megabit Data Service) - A connectionless high-speed data transmission service that provides wide area LAN connectivity through the public telephone network.

SMF - system management function

SMG - secure mail guard

SMI - Soldier Machine Interface

SMI - structure of management information

SMIB - security management information base

SMIF - standard mechanical interface

SMM - system management mode

SMP - symmetric multiprocessing

SMPC - shared memory parallel computer

SMR - specialized mobile radio

SMRAM - system management random access memory

SMRI - service message RI

SMRS - specialized mobile radio system

SMS - system-managed storage

SMS - simple (short) message service

SMS - service management station

SMT - surface mount technology

SMTP - Simple Mail Transport Protocol

SMTS - space and missile tracking system

SMU - system management utility

SMU - Switch Multiplex Unit

SMUX - smart multiplexer

SMX - satellite multiplexer

SN - secondary-nonconnected

SN - SEN net variable

SNA - (System Network Architecture) - An IBM communications architecture that describes the logical structure, formats, protocols, and operational sequences to transmit information units through a communications network.

SNAP - Shipboard Non-tactical Automated Program

SNAP - subnetwork access point

SNAP - switched network automated planner

SNCS - secondary net control station

SNI - subscriber network interface

SNIU - secure network interface unit

SNMP - Simple Network Management Protocol

SNOS - silicon nitride oxide semiconductor

SNPA - subnetwork point of attachment

SNR - signal to noise ratio

SNS - secure network server

SNS - secondary node switch

SOA - Start of Authority

SOAC - Signal Officer Advanced Course

SOAP - simple object access protocol

SOBC - Signal Officer Basic Course

SOC - Special Operations Command

SOCCE - special operations command and control element

SOCEUR - Special Operations Command Europe

SOCOM - special operations command

SOCPAC - Special Operations Command Pacific

SOCRATES - Special Operations Command Research, Analysis, and Threat Evaluation System

SOCS - Subcommittee on Computer Security

SOE - standard operating environment

SOF - special operations forces

SOF-IV - Special Operations Forces-Intelligence Vehicle

SOF - Special Operations Forces

SOFAMPS - SOF advanced mission planning system

SOFPARS - SOF operations force planning and rehearsal system

SOFTACS - special operations forces tactical assured connectivity system

SOFTECS - SOF technical control system

SOI - Signal operating instructions

SOIC - small outline integrated circuits

SOICS - special operations improved cryptographic system

SOIS - Special Operations Intelligence System

SOJ - stand-off jammer

SOL - simulation oriented language

SOM - system object model

SOM - Start of Message

SONET - (Synchronous Optical Network) - A fiber optic standard. The basic signal operates at 51.840 Mbps. The information payload can be one DS3 datastream.

SONOS - silicon oxide nitride oxide semiconductor

SOP - standing operating procedure

SORDAC - Special Operations Research, Development and Acquisition Center

SOSC - Systems Operational Support Center

SOSUS - sound surveillance system

SOT - start of text

SOTA - Signals Intelligence Operational Tasking Authority

SOTAS - Stand-off target acquisition system

SOTVS - special operations tactical video system

SOUTH - US Southern Command

SOUTHAF - Air Force component, US Southern Command

SOUTHCOM - US Southern Command

SP - search pattern

SP - security protocol

SP - signal processor

SP - start point

SP - security preferred, sound power

SP - space

SP/WP - smart push/warrior pull

SP4 - security protocol layer 4

SPA - software process assessment

Space - A logical 0 condition on a data circuit.

SPADATS - space tracking detection system

SPAG - Standards Promotion and Application Group (EC)

Span - (Spanline) - A full duplex digital transmission line between two digital facilities, such as between a carrier facility and the customer installation.

Span-Mode - TRK-3 - A TRK-3 module installed in span-mode connects directly to the transmission line or span (consists of a front card and an interface card). Proprietary and clear channel bundles are installed on span-mode cards. Also see Tandem-Mode TRK-3.

SPARC - scalable processor architecture

SPB - Security Policy Board

SPC - small peripheral controller

SPC - statistical process control

SPD - speed

SPDVB - Special Device Controller B

SPDVC - Special Device Controller C

SPDVD - remote special devices demultiplexer

SPE - software product evaluation

SPEC - system performance evaluation cooperative

SPECAT - special category

SPEDE - system procurement by electronic data exchange

SPEED - Systems Planning, Engineering, and Evaluation Device

SPF - shortest path first

SPI - service provider interface

SPI - software process improvement

SPICE - software rrocess improvement and capability determination

SPID - Service Profile IDentifier- On the "National ISDN", "AT&T Custom PMP" and "Custom DMS" ISDN protocols, the Telco switch must receive correct SPID(s) from the CPE before it will allow access to ISDN service. Intended to allow multiple configurations on ISDN lines shared among different types of CPE equipment. While your SPID may include your area code and telephone number, the SPID is distinct from the telephone number. Custom PTP and ETS 300 protocols do not require a SPID.

SPIF - Security Policy Information File

SPIRE - spatial paradigm for information retrieval and exploration

SPIRIT - Special Purpose Integrated Remote Intelligence Terminal

SPIRITS - special in-band radiance imaging of targets and scenes

SPLX2W - simplex 2-wire

SPM - security policy model

SPOOL - simultaneous peripheral operations on line

SPP - scaleable parallel processor

SPP - sequenced packet protocol

SPP - SPEED path profiler

SPRITE - signal processing in the element

SPS - software product specification

SPS - standard procurement system

SPSC - system planning and system control

SPT - sectors per track

spt - support

SPW - signal processing workstation

SPX - sequenced packer exchange

SPX Network Processor - A high-end statistical multiplexer using packet technology to establish virtual circuits connecting data devices in a wide-area network.

SQA - software quality assurance

SQAP - software quality assurance plan

SQC - statistical quality control

SQE - signal quality error

SQL - structured query language

SQP - Software Quality Program

SQPP - Software Quality Program Plan

SR - security required

SR - secondary-remote

SRA - subregistration authority

SRAM - static random access memory

SRB - Software Review Board

SRC - standard requirements code

SRCU - securable remote control unit

SRDM - (Subrate Data Multiplexing) - A subrate data multiplexer divides a DS0 (64 kbps) into a number of subrate (64 kbps) channels.

SRI - surveillance, reconnaissance and intelligence

SRM - security reference monitor

SRM - system resource manager

SRN - software release notice

SRN - single row nest

SRO - sharable and read only

SRPI - server-requester programming interface

SRS - software requirements specification

SRT - source routing transparent

SRT - Shipboard Receive Terminal

SRV - SEN rekey variable

SRWBR - short range wideband radio

SS - signaling system

SS - spread spectrum

SS-4 - selective signaling voice conference system

SS - Switch Supervisor

SSA - serial storage architecture

SSA - servicing security agency

SSA - software support activity

SSA - System Security Administrator

SSA - system security analysis

SSAA - system security authorization agreement

SSAP - source service access point

SSB - single sideband

SSC - (Secondary Signaling Channel) - 1. SSC is a user-configurable alternative to Signaling Channel Link Protocol (SCLP) for carrying traditional internodal signaling and IP Packets. Because SSC can carry internodal traffic, it can be used to replace or supplement SCLP functionality. SSC can be used on an as needed basis to provide extra bandwidth for increased internodal traffic. See also SCLP. 2. SIPRNET support center

SSC - SIPRNET support center

SSCOP - service specific connection-oriented protocol

SSCS - standard satellite control systems

SSDS - ship self-defense system

SSE - system security engineering

SSEE - shipÕs signals exploitation equipment

SSEM - system and server evaluation model

SSF - software support facility

SSGA - system support gate array

SSH - secure shell

SSI - small scale integration

SSI - synchronous service window

SSI - standing signal instructions

SSIMP-LR - Soldier/Sailor Interface Management Program - Local/Remote

SSL - secure sockets layer

SSL - standard security label

SSM - System/Security Manager

SSMA - spread spectrum multiple access

SSME - spread spectrum modulation equipment

SSMI - simplified soldier-machine interface

SSMP - System Safety Management Plan

SSMS - Signal intelligence manpack system

SSMS - single shelter message switch

SSN - switched service network

SSO - Special Security Officer

SSP - single source processor

SSR - software specification review

SSRA - system safety risk assessment

SSRP - simple server redundancy protocol

SSRR - strict source and record route

SSRT - Sub Surface Receive Terminal

SSS - system segment specification

SSS - Single Shelter Switch

SSSA - software systems support activity

SST - spread-spectrum technology

ST - synchronous transport

ST - student text

ST - reference points in ISDN interface

ST - send timing

ST&E - security test and evaluation

STA - system tape A

STA - CLK station clock

STA - ID station identification number

STACCS - Standard Theater Army Command and Control System

STAIRS - storage and information retrieval system

STAMIS - Standard Army Management Information System

STAMPS - stand-alone message processing system

STANAG - Standardization Agreement

STAR - satellite tracking using ambient radio frequency

STAR - System Threat Analysis Report

Star Topology - The point-to-point wiring of network elements to a central node.

STAR-T - Super (High Frequency Tri-band) Advanced Range Extension Terminal

STAR-T - SHF Tri-Band Advanced Range Extension Terminal

STARS - software technology for adaptable, reliable systems

Start Bit - The first element in each character in asynchronous transmission.

STARTEX - start of exercise

Station - NDI nondevelopmental item

Station Clock - An external device that receives a timing signal from an external source and passes it through the USD to the node. It provides a 4 kHz reference frequency to the node and an external frequency reference.

Station Line - A telephone circuit from a PBX to a telephone on that PBX. Since this is a telephone-to-switch connection it is considered to be a"line". See Line and Trunk.

Statistical Multiplexer - Dynamically allocates trunk capacity to active input channels only, allowing the connection of more devices than with traditional multiplexers.

Statistical Multiplexing - A method of improving effective bandwidth of a Telco channel. Statistical Multiplexing takes advantage that there are typically many pauses in a conversation. By taking advantage of this fact, and not sending the pauses, improvements in efficiency can be made. Also referred to as silence suppression. See Circuit Switched.

STATS - statistics

Status Level - Restricts the amount of access that an operator has to the network and the tasks on the network that the operator can perform. The Operator Interface has four status levels or levels of security.

STAWRS - simplified tax and wage reporting system (Treasury)

STC - SHAPE Technical Centre

STC - Software Technology Center

STC - Secondary Traffic Channel

STD - subscriber trunk dialing

STD - standard

STDIS - space division timing distributor

STDM - statistical time division multiplexer

STDMA - self-organizing time division multiple access

STDN - secure tactical data network

STE - secure telephone equipment

STE - secure terminal equipment

STE-R - remote controllable secure terminal equipment

STEL - secure telephone

STEP - standard for the exchange of product

STEP - Standardized Tactical Entry Point

STGEN - space division matrix timing generator

STI - summing telephone interface

STIC - Standard Interface Controller

STIG - Security Technical Implementation Guide

STIISP - Scientific and Technical Intelligence Information Services Program

STK - strategic-to-tactical KEK

STM - synchronous transfer mode

STN - software transfer notice

STO - science and technology objectives

STO - special technical operations

STO - store

Stop Bit - The last element of a character in asynchronous transmission.

STOW - Synthetic Theater of War

STP - shielded twisted pair

STP - signal transfer point

STP - software test plan

STP - step

STR - software test report

STRADIS - structured analysis, design and implementation of information system (NATO)

STRADS - strategic deployment system

STRATCERT - Strategic Command computer emergency response team

STRED - Standard Tactical Receive Equipment Display

STS - Subcommittee on Telecommunications Security

STS - (Standard Shelf) - A mechanical assembly (chassis) containing the feature and common equipment modules plus the Bus Terminator Interface in a Promina 800. This shelf consists of 12 card slots and power supplies.

STS - SSIMP-LR Trainer Software

STS-3c - synchronous transport signal 3 concatenated

STSVT - strategic/tactical secure voice terminal

STU - secure telephone unit

STU - secure terminal unit

STU-III - Secure Telephone Unit III

STX - strategic-to-tactical TEK

SUB - subscriber

Subrate - Any data port speed that is less the 64 kbps.

Subrated - Analogous to DS0 channels on a DS1 data stream. A DS3 data stream can be subrated into DS1 data streams using M13. The Promina uses a non-subrated (or proprietary format) downstream for T3. Third-party equipment will not be able to separate circuit information out of the data stream payload.

SUBS - subscriber(s)

Subscriber - The customer of a Telecommunications company. This term dates back to when a local Telephone Company was formed at the specific request of a group of customers who agreed in advance to "subscribe" to the service.

SUM - software userÕs manual

SUPCOM - support command

SUPE - supervisory commands program

Superframe - See SF

Supervisor - Software - Software in the processor module that controls and manages the node.

SUPP - supplement

supv - supervisor

SUR - small unit radio

SURTASS - surveillance towed array sensor system

SURVIAC - Survivability/Vulnerability Information Analysis Center

SVAR - S variable

SVC - switched virtual circuit

SVD - simultaneous voice and data processor

SVGA - super video graphics array

SVI - standardized virtual interface

SVLTU - service line termination unit

SVM - secure voice module

SVP - software validation plan

SVS - secure voice system

SVT - secure voice terminal

SVTC - secure video teleconferencing

SW - software

SW - switch

SWA - Southwest Asia

SWAN - satellite wide area network

SWAN - shipwide area network

SWBD - switchboard

SWC - strike warfare coordinator

SWDMX - Switch DEMUX, Switch Demultiplexer


SWIT - software integration and test

Switch - Telephone company switching device which "makes the connection" when you place a call. Modern switches are specialized computers. ISDN service is provided from a "Digital" switch, most commonly an AT&T model "5ESS", Northern Telcom model "DMS-100", or Siemens model "EWSD". The switch, and related software running on it, will determine which ISDN protocol(s) will be available to customers connected to it. See also PBX.

Switched Circuit - A channel which is not permanent in nature, but is connected through a switching device of some kind. The switching device allows a switched circuit to access many other switched circuits (the usual "dial up" type of telephone channels). Once the connection is made however, the complete capacity of the channel is available for use. As opposed to a Dedicated Circuit.

Switched-56 - A type of digital telephone service developed in the mid-1980's which allows dialing on a single 56Kbps line. Each Switched-56 circuit has 1 or 2 copper wire-pairs associated with it. Switched-56 is being rapidly replaced with ISDN, which is cheaper and more flexible. See also CSU/DSU.

Switching - The ability to create or change the path of a transmission.

SWL - short wavelength

SWMUX - Switch MUX/DEMUX, Switch MUX, Switch Multiplexer

SWOLOP - Sun Workstation On-line Operational Program

SWPS - strategic war planning system

SWS - silly window syndrome

SX - (Switching Exchange) Module - In a Promina 800, this module provides the switch matrix and clocking for the node. It connects to the SBI, BXI, and T3I cards.

SYN - synchronous idle

SYN - synchronization character

SYN - synchronize sequence numbers flag, TCP header

SYNBAD - synthetic battlefield development

SYNC - synchronization

SYNCH - synchronize/synchronization

Synchronous Data - A form of serial data which uses a clock signal to synchronize the bit stream. SInce, unlike Asynchronous Data, no start and stop bits are use, data throughput is higher than with asynchronous data. ISDN uses Synchronous data.

Synchronous Transmission - Data transmission in which synchronization is controlled by timing signals which are independent of the data signals on the DTE/DCE interface, and which are synchronized to a common, or network, reference. A constant clock speed is maintained between end terminals during (and between) the characters (or groups of characters) being transmitted; transmission in which the sending and receiving instruments are operating continuously at substantially the same frequency and in which the desired phase relationship may be maintained by means of correction.

SYNCRX - sync command receive

SYNCTX - sync command transmit

SYNTRAN - T3 datastream format with synchronous, subrated T1 data. This is not compatible with the Promina 800.

SYS - system

SYSADMIN - system administration

SYSCON - system control

SYSGEN - system generator

SYSLOG - system log

SYSOP - system operator

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