| Term | Description |
S-CDMA | S-CDMA - Synchronous CDMA (see CDMA)
|
SACCH | SACCH - Slow Associated Control Channel; transmits continuous measurements in parallel with operation of TCH or SDCCH; needed for handover decisions
|
SAR | SAR - Specific Absorption Rate
|
SB | SB - Synchronisation Burst; used for time synchronisation of the mobile
|
SCH | SCH - Synchronisation Channel; downlink only frame synchronisation and identification of base station
|
SCP | SCP - Switching/Service Control Point
|
SDCCH | SDCCH - Stand-alone Dedicated Control Channel; communications channel between the MS and the BTS. Used for signalling during call set-up before a TCH is allocated
|
SDLC | SDLC - Synchronous Data Link Control
|
SDMA | SDMA - Spatial Division Multiple Access
|
SGSN | SGSN - Serving GPRS Support Node; the gateway between the RNC and the core network in a GPRS/UMTS network
|
SIM | SIM - Subscriber Identity Module. The smart card used in digital phones. It carries the user's identity for accessing the network and receiving calls and also stores personal infromation, such as phone directory and received SMS messages.
|
Smartphone | Smartphone - a combination of mobile phone and personal digital assistant
|
SMR | SMR - Specialised Mobile Radio; the US term for private mobile radio (See PMR)
|
SMS | SMS - Short Message Service. A service that enables subscribers to send short text messages (usually about 160 characters) to and from mobile phones.
|
SMS-MO | SMS-MO - SMS Mobile Originated
|
SMS-MT | SMS-MT - SMS Mobile Terminated
|
SMS-PP | SMS-PP - SMS Point to Point
|
SMSC | SMSC - SMS Centre-the network entity which switches SMS traffic
|
SMSCB | SMSCB - SMS Cell Broadcast
|
SND | SND - Send; The key on a cellular phone which initiates a call or answers an incoming call
|
SoHo | SoHo - Small Office/Home Office
|
SP | SP - Service Provider
|
Speakerphone | Speakerphone - or Build-in Handsfree. Allows the phone to be used at a short distance, without the phone being held next to the face.
|
Speed dialling | Speed dialling - See One-touch dialling
|
SQAM | SQAM - Staggered Quadrature Amplitude Modulation
|
SQPSK | SQPSK - Staggered Quadrature Phase Shift Keying
|
SS | SS - Supplementary Service Support; handles special services
|
SS7 | SS7 - Signalling System Number 7 (See CCS7)
|
SSP | SSP - Service Switching Point
|
Standby time | Standby time - The length of time a battery can power a mobile phone when it is switched on but not making or receiving calls
|
STK | STK - SIM ToolKit: specified within the GSM standard, this allows operators to add additional functions to the phone menu in order to provide new services such as mobile banking or email
|
STM | STM - Synchronous Transfer Mode
|
STN | STN - Super Twisted Nematic. A type of LCD display technology. STN uses less power and is less costly than TFT technology, but at the expense of image quality and response time.
|
Streaming | Streaming - An Internet derived expression for the one-way transmission of video and audio content
|
Symbian | Symbian - A company created by Psion, Nokia, Ericsson and Motorola in 1998 with the aim of developing and standardising an operating system which enable mobile phones from different manufacturers to exchange information. The operating system is known as EPOC. Matsushita has subsequently joined Symbian
|
