SST (slice/service type)
In the context of network slicing and service-based architectures, SST
Telecom
SSS (Secondary Synchronisation signal)
The Secondary Synchronisation Signal (SSS) is an essential component of
SSQ sum of squares
In statistics, sum of squares (SSQ) refers to the sum
SSPs Small-Scale Parameters
However, if you are referring to "Small-Scale Parameters"
SSP Secure Smart Platform
The Secure Smart Platform (SSP) is an advanced technological solution
SSPA Solid-State Power Amplifier
SSPA (Solid-State Power Amplifier) is a type of power amplifier
SSP Service Switching Point
Service Switching Point (SSP) is a component in telecommunications networks
SSN Subsystem Number
SSN (Subsystem Number) is a term commonly used in signaling
SSN Starting Sequence Number
Starting Sequence Number (SSN) is a concept used in telecommunications
SSM synchronization status messages
SSM (Synchronization Status Messages) is a protocol used in computer