SAF

Service Availability Forum. Refer to www.saforum.org for details

SCOPE

SCOPE Alliance. Refer to www.scope-alliance.org for details.

SDH

Synchronous Digital Hierachy

SDN

Software Defined Network

SDR

when used in the context of management for MicroTCA or AdvancedTCA systems: Sensor Data Record

SDR

Software Defined Radio

SDRAM

static DRAM

SEL

System Event Log

SFP.0

System Fabric base specification by PICMG - defines a consistent method for carrying encapsulated TDM across any AdvancedTCA or MTCA transport as well as for PICMG 2.16. Refer to www.picmg.org for details.

SFP.1

I-TDM base specification by PICMG - defines an Internal TDM (I-TDM) multiplexed voice over packet protocol that is optimized for Voice LANs and Packet Backplanes. Refer to www.picmg.org for details.

SILK

Vocoder used with internet applications, i.e. Skype

SMP

when used with MTCA: Shared Management Power

SMP

when used with multi-core CPUs: symmetric multi-processing

SNMP

Simple Network Management Protocol

SRAM

static RAM

SRIO

Serial RapidIO. Refer to www.rapidio.org for details.

SS7

Signaling System #7

STM

Synchronous Transport Mode

STM-1

1st level of SDH, 155Mbps, often used in combination with OC-3

STM-4

4th level of SDH, 622Mbps, often used in combination with OC-12

STM1

same as STM-1

STM4

same as STM-4