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ELS31-VA/ELS51-VA Hardware Interface Description
6.3 Terms and Abbreviations
103
ELS31-VA_ELS51-VA_HID_v01.000
2017-01-04
Confidential / Preliminary
Page 102 of 106
PA
Power Amplifier
PAP
Password Authentication Protocol
PBCCH
Packet Switched Broadcast Control Channel
PCB
Printed Circuit Board
PCL
Power Control Level
PCM
Pulse Code Modulation
PCN
Personal Communications Network, also referred to as DCS 1800
PCS
Personal Communication System, also referred to as GSM 1900
PLL
Phase Locked Loop
PPP
Point-to-point protocol
PSK
Phase Shift Keying
PSU
Power Supply Unit
R&TTE
Radio and Telecommunication Terminal Equipment
RAM
Random Access Memory
RF
Radio Frequency
RLS
Radio Link Stability
RoHS
Restriction of the use of certain hazardous substances in electrical and electronic
equipment.
RTS
Request to Send
Rx
Receive Direction
SAR
Specific Absorption Rate
SAW
Surface Acoustic Wave
SDIO
Secure Digital Input Output
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
TA
Terminal adapter (e.g. GSM module)
TDMA
Time Division Multiple Access
TE
Terminal Equipment, also referred to as DTE
TLS
Transport Layer Security
Tx
Transmit Direction
UART
Universal asynchronous receiver-transmitter
URC
Unsolicited Result Code
USSD
Unstructured Supplementary Service Data
VSWR
Voltage Standing Wave Ratio
Abbreviation
Description