Acronym Guide - S

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S&LC - Schools and Libraries Corporation (Part 54)

SaaS - Software as a Service

SAC - Study Area Code

SAN - Storage Area Network

SAS - Special Access Surcharge

SBC - Session Border Controller

SBI - Switching Band Index

SBR - Switched-Based Reseller

SCC - State Corporation Commission

SCIS - Switching Cost Information System

SCP - Service Control Point

SCSI - Small Computer System Interface

SDC - System Design Consultant

SDH - Synchronous Digital Hierarchy (SONET)

SDN - Software Defined Networking

SDSL - Symmetric Digital Subscriber Line

SDV - Switched Digital Video (cable)

SEAS - Signaling System Engineering & Administration System

SEC - Securities and Exchange Commission

SECAB - Small Exchange Carrier Access Billing Specification

SECNCI - Secondary NCI

SHDSL - Symmetric High-Speed Digital Subscriber Line

SIP - Session Initiated Protocol

SIS - Separations Information System

SLA - Service Level Agreement

SLC - Subscriber Line Charge 

SLC - Subscriber Loop Carrier

S&LC - Schools and Libraries Corporation 

SLD - Schools and Libraries Division of USAC

SLM - Synthetic Loss Measurement

SMA - Standard Metropolitan Statistical Area

SMDI - Station Message Detail Interface

SMDS - Switched Multimegabit Data Service

SMF - Signaling Mileage Facility

SMS - Short Message Service

SMS - Service Management System

SMSA - Standard Metropolitan Statistical Area

SMT - Signaling Mileage Termination

SNA - Safety Net Additive

SNAL - Signaling Network Access Line

SOAC - Service Order Analysis and Control System

SOAP - Simple Open Access Protocol

SOCS - Synchronous Optical Channel Service

SONET - Synchronous Optical Network

SOP - Service Order Processor

SP - Signaling Point

SPA - Special Access

SPF - Subscriber Plant Factor

SPIN - Service Provider Identification Number

SPOC - Single Point Of Contact

SPOI - Signaling Point of Interface 

SPVC - Standard Permanent Virtual Connection

SRL - Singing Return Loss

SS7 - Signaling System 7

SSN - Switched Service Network

SSP - Service Switching Point

STB - Set-top Box

STP - Signal Transfer Point

STS - Synchronous Transport Signal

SV - Safety Valve

SVC - Service Type

SVS - Safety Valve Support

SW - Switched

SWA - Switched Access

SWC - Serving Wire Center