User's Manual

Cinterion
®
ALS3-US R4 Hardware Interface Overview
1.3 Terms and Abbreviations
14
 ALS3-USR4_HIO_v03.915 2017-03-27
Confidential / Preliminary
Page 9 of 44
PCL Power Control Level
PCS Personal Communication System, also referred to as GSM 1900
PD Pull Down resistor
PDU Protocol Data Unit
PS Packet Switched
PSK Phase Shift Keying
PU Pull Up resistor
QAM Quadrature Amplitude Modulation
R&TTE Radio and Telecommunication Terminal Equipment
RF Radio Frequency
rfu Reserved for future use
ROPR Radio Output Power Reduction
RTC Real Time Clock
Rx Receive Direction
SAR Specific Absorption Rate
SELV Safety Extra Low Voltage
SIM Subscriber Identification Module
SMD Surface Mount Device
SMS Short Message Service
SMT Surface Mount Technology
SRAM Static Random Access Memory
SRB Signaling Radio Bearer
TE Terminal Equipment
TPC Transmit Power Control
TS Technical Specification
Tx Transmit Direction
UL Upload
UMTS Universal Mobile Telecommunications System
URC Unsolicited Result Code
USB Universal Serial Bus
UICC USIM Integrated Circuit Card
USIM UMTS Subscriber Identification Module
USAT U/SIM Application Toolkit
WB-AMR Wideband Adaptive Multirate
WCDMA Wideband Code Division Multiple Access
Abbreviation Description