Blue Flower

SA 

Source Address

SAAL 

Signaling ATM Adaption Layer

SAN 

Synfonet Access Node (Nokia's SDH access node)

SAP 

Service Access Point

SAR 

Segmentation And Reassembly

SAT 

SIM Application Toolkit

SBR 

Statistical Bit Rate

SC 

Service Center

SCCH 

Synchronization Control Channel

SCCP 

Signaling Connection Control Part

S-CDR 

Serving GPRS Support Node-Call Detail Record

SCF 

Service Control Function

SCH 

Synchronization Channel

SCP 

Service Control Point

SCR 

Sustainable Cell Rate

SCS 

Service Configuration System

SCS 

Service Capability Server

S-CSCF 

Serving call session control function

SDCCH 

Stand Alone and Dedicated Control Channel

SDH 

Synchronous Digital Hierarchy: high speed digital transmission mode

SDL 

Simplified Data Link

SDMA 

Space Diversity Multiple Access

SDMI 

Secure Digital Music Initiative

SDO 

Standardisation Organisation

SDP 

Service Data Point

SDR 

Service Data Record

SDT 

Structured Data Transfer

SEAL 

Simple and Efficient Adaption Layer

SECB 

Severely Errored Cell Blocks

SEL 

Selector

SES 

Severely Errored Seconds

SES 

Source End Station

SET 

Secure Electronic Transaction

SF 

Spreading Factor

SFN 

System Frame Number

SGF 

Signalling Gateway

SGSN 

Serving GPRS Support Node

SHO 

Soft handover

Signalling 

dialog used by switches

Signalling system 7 

International standard for digital signalling standarized by ITU-T

SIM 

Subscriber Identity Module

SIP 

Session Initiation Protocol

SIR 

Signal - to - Interference Ratio

SIR 

Sustainable Information Rate

SLA 

Service Level Agreement

SLD 

Second Level Domain

SLEE 

Service Logic Execution Environment

SLIP 

Serial Line Internet Protocol

SLP 

Service Logic Programs

SLS 

Service Level Specification

SM 

Short Message

SMAP 

System Management Application Program

SMDS 

Switched Multi-Megabit Data Services

SME 

Small Medium Enterprise

SMF 

Single Mode Fibre

SMFA 

Specific Management Functional Area

SMG 

Special Mobile Group

SMIL 

Synchronized Multiumedia Integration Langage

SMP 

Service Management Point

SMPP 

Short Message Peer to Peer

SMRSE 

Short Message Relay Service Element

SMS 

Short Message Service

SMSC 

Short Message Service Center

SMSCB 

Short Message Service Cell Broadcast

SMS-GMSC 

Short Message Service Gateway MSC

SMS-IWMSC 

Short Message Service InterWorking MSC

SMS-MO/PP 

Mobile Originated Short Messages

SMS-PP 

Point-to-Point Short Message Service

SMSS 

Switching and Management Sub-System

SMTP 

Simple Mail Transfer Protocol

SN 

Sequence Number

SNC 

Sub-Network Connection

SNDCP 

Sub-Network Dependent Convergence Protocol

SNMP 

Simple Network Management Protocol

SOAP 

Small Object Access Protocol

SoHo 

Small office Home office

SONET 

Synchronous Optical Network

SP 

Signaling Point

SPN 

Service Provider Name

SPNP 

Support of Private Numbering Plan

SPVC 

Soft Permanent Virtual Channel

SPVP 

Soft Permanent Virtual Path

SQL 

Structured Query Language

SR 

Source Routing

SRI 

Send Routing Information

SRNC 

Serving Radio Network Controller

SRNS 

Serving Radio Network Subsystem

SRTS 

Synchronous Residual Time Stamp

SS 

Supplementary Services

SS7 

CCITT Signalling System number 7

SSCOP 

Service Specific Connection Oriented Protocol

SSCS 

Service Specific Convergence Sublayer

SSF 

Service Switching Function

SSL 

Secure Socket Layer

SSP 

Switching Service Point

STK 

SIM Toolkit

STM-1 

Synchronous Transport Module (155.52 Mbit/s) / signal 1

STM-n 

Synchronoys Transport Module n/ signal n

STP 

Signalling Transfer Point

STTD 

Space Time Transmit Diversity

Subscriber Unit 

Equipment used to connect customers to a switch

SVC 

Switched Virtual Circuit

SVCC 

Switched Vitual Channel Connection

SVPV 

Switched Virtual Path Connection

SWAP 

Shared Wireless Access Protocol

SXC 

Service Cross-Connect