Abbreviations
A
B
C
D
E
F
G
H
I
K
L
M
N
O
P
Q
R
S
T
U
V
W
Z
| AD |
Analog/Digital |
| ADC |
Analog-to-Digital Converter |
| AFC |
Automatic Frequency Control |
| AGC |
Automatic Gain Control |
| Altitude |
The distance between the current position and the nearest point on WGS-84 (World Geodectic System 1984) reference ellipsoid. Altitude is usually expressed in meter an is positive outside the ellipsoid. |
| AMP |
Advanced Power Management |
| ANSI |
American National Standards Institute |
| APM |
Advanced Power management |
| APN |
Access Point Name |
| ARFCN |
Absolute Radio Frequency Channel Number |
| ARM |
Advanced RISC Machines |
| ARP |
Antenna Reference Point |
| ASC0/ASC1 |
Asynchronous Controller. Abbreviations used for first and second serial interface of XF55-AVL |
| ASIC |
Application Specific Integrated Circuit |
| ATP |
Adaptive TricklePower™ |
| B |
Thermistor Constant |
| B2B |
Board-to-board connector |
| BER |
Bit Error Rate |
| BGA |
Ball Grid Array |
| Bluetooth |
Bluetooth (wireles connections technology) is a specification for a radio system that allows electronic devices to communicate with each other over short distances without connecting cables. |
| bps |
Bits per second |
| BS |
Basic service equivalent to parameter |
| BTS |
Base Transceiver Station |
| C |
Character of TE character set (e.g. asterics, hash or digit in case of USSD, or digits in case of held calls or multiparty calls) |
| CB or CBM |
Cell Broadcast Message |
| CC |
Constant current |
| CCITT |
Comité Consultatif International Télégraphique et Téléphonique |
| CE |
Conformité Européene (European Conformity) |
| CHAP |
Challenge Handshake Authentication Protocol |
| CID |
Context Identity |
| CLK |
Clock |
| CPU |
Central Processing Unit |
| CRLF |
Carriage Return/Line Feed |
| CS |
Coding Scheme |
| CSD |
Circuit Switched Data |
| CTS |
Clear to Send |
| CV |
Constant voltage |
| DAC |
Digital-to-Analog Converter |
| DAI |
Digital Audio Interface |
| dB |
Decibel |
| dBW |
Decibel per Watt |
| dBm0 |
Digital level, 3.14 dBm0 corresponds to full scale, see ITU G.711, A-law |
| DCD |
Data Carrier Detect |
| DCE |
Data Communication Equipment (typically modems, e.g. XF55-AVL GSM engine) |
| DCS 1800 |
Digital Cellular System, also referred to as PCN |
| DGPS |
Differential GPS |
| DHCP |
Dynamic Host Configuration Protocol |
| DIN |
German Industry Standard |
| DN |
Dialing Number |
| DNS |
Domain Name Server |
| DOP |
Dilution of Precision |
| DRX |
Discontinuous Reception |
| DSB |
Developer Support Box |
| DSP |
Digital Signal Processor |
| DSR |
Data Set Ready |
| DTE |
Data Terminal Equipment (typically computer, terminal, printer or, for example, GSM application) |
| DTR |
Data Terminal Ready |
| DTX |
Discontinuous Transmission |
| ECEF |
Earth-Centred Earth-Fixed Co-ordinate system |
| EEPROM |
Memory for parameter |
| EFR |
Enhanced Full Rate |
| E-GSM |
Extended - GSM |
| EGSM |
Enhanced GSM |
| EMC |
Electromagnetic Compatibility |
| EN |
Enable |
| ESD |
Electrostatic Discharge |
| ETS |
European Telecommunication Standard |
| ETSI |
European Telecommunication Standard Institute |
| FAA |
Federal Aviation Administration |
| FCC |
Federal Communications Commission (U.S.) |
| FD |
SIM fix dialing phonebook |
| FDMA |
Frequency Division Multiple Access |
| FIFO |
First In First Out,system in which the first item stored is the first item retrieved |
| FLASH memory |
A particular type of memory that is permanent and the data written on it will be not lost when the device is turned off. It can be updated and upgreated by special program. |
| FM |
Frequency Modulation |
| FR |
Full Rate |
| FTP |
File Transfer Protocol |
| GGA |
GPS Fixed Data |
| GGSN |
Gateway GPRS Support Node |
| GLL |
Geographic Position - Latitude/Longitude |
| GMM/SM |
GPRS Mobility Management/Session Management |
| GMSK |
Gaussian Minimum Shift Keying |
| GND |
Ground |
| GNSS |
Global Navigation Satellite System |
| GPI |
General Purpose Input |
| GPIO |
General Purpose Input Output |
| GPRS |
General Packet Radio Service |
| GPS |
Global Positioning System |
| GPS Time |
The number of seconds since Saturday/Sunday Midnight UTC, with time zero beginning this midnight. Used with GPS Week Number to determine a specific point in GPS Time. |
| GSA |
GNSS DOP and Active Satellites |
| GSM |
Global Standard for Mobile Communications |
| GSV |
GNSS Satellites in View |
| HDOP |
Horizontal DOP |
| HiZ |
High Impedance |
| HL |
High-Low |
| HR |
Half Rate |
| HSCSD |
General Packet Radio Service |
| HTTP |
Hypertext Transfer Protocol |
| HTTPS |
Secure Hypertext Transfer Protocol |
| Hub |
A device which connects to the USB port on PC or Notebook and provides several USB ports for connection to USB devices |
| HW |
Hardware |
| Hz |
Hertz (a unit of frequency) |
| I/O |
Input/Output |
| IC |
Integrated Circuit |
| IF |
Intermediate Frequency |
| IMAP4 |
Interactive Mail Access Protocol Version 4 |
| IMEI |
International Mobile Equipment Identity |
| IP |
Internet Protocol. Providers offer two types of IP addresses -static IP address and dynamic IP address. |
| IRC |
Internet Relay Chat |
| ISO |
International Standards Organization |
| ITU |
International Telecommunications Union |
| Latitude |
Halfway between the poles lies equator. Latitude is the angular measurement of a place expressed in degrees north or south of the equator. Latitude runs from 0° at the equator to 90° north or 90° south at the poles. When not prefixed with letters E or W, it is assumed positive north of Equator and negative south of Equator. Lines of latitude run in an east-west direction. They are called parallels. |
| LD |
SIM last dialing phonebook (list of numbers most recently dialed) |
| LDAP |
Lightweight Directory Access Protocol |
| LED |
Light Emitting Diode |
| LH |
Low-High |
| Li-Ion |
Lithium-Ion |
| LNA |
Low Noise Amplifier |
| Longitude |
Lines of longitude, called meridians, run in a north-south direction from pole to pole. Longitude is the angular measurement of a place east or west of the prime meridian. This meridian is also known as the Greenwich Meridian, because it runs through the original site of the Royal Observatory, which was located at Greenwich, just outside London, England. Longitude runs from 0° at the prime Meridian to 180° east or west, halfway around the globe. When not prefixed with letters E or W, it is assumed positive east of Greenwich and negative west of Greenwich. The International Date Line follows the 180° meridian, making a few jogs to avoid cutting through land areas. |
| LSB |
Least Significant Bit (of a binary word). |
| Mbps |
Mbits per second |
| MC |
Mobile Equipment list of unanswered MT calls (missed calls) |
| ME |
Mobile Equipment phonebook |
| MHz |
Mega Hertz (a unit of frequency) |
| MI |
Module Interface |
| MIC |
Microphone |
| MMC |
Multimedia Card |
| MMI |
Man Machine Interface |
| MO |
Mobile Originated |
| MS |
Mobile Station (GSM engine), also referred to as TE |
| MSB |
Most Significant Bit (within a binary word or a byte). |
| MSISDN |
Mobile Station International ISDN number |
| MSK |
Minimum Shift Key |
| MSS |
MSK Receiver Signal |
| MT |
Mobile Terminated |
| NC |
Not Connected |
| NMEA |
National Maritime Electronics Association |
| NNTP |
Network News Transfer Protocol |
| NOM |
Network Operation Mode |
| NT |
Not Connected |
| NTC |
Negative Temperature Coefficient |
| NTP |
Network Time Protocol |
| OEM |
Original Equipment Manufacturer |
| ON |
Own numbers (MSISDNs) stored on SIM or ME |
| OS |
Operating System |
| PA |
Power Amplifier |
| PAP |
Password Authentication Protocol |
| PBCCH |
Packet Switched Broadcast Control Channel |
| PC |
Personal Computer |
| PCB |
Printed Circuit Board |
| PCL |
Power Control Level |
| PCM |
Pulse Code Modulation |
| PCMCIA |
Personal Computer Memory Card International Association |
| PCN |
Personal Communications Network, also referred to as DCS 1800 |
| PCS |
Personal Communication System, also referred to as GSM 1900 |
| PDP |
Packet Data Protocol |
| PDU |
Protocol Data Unit |
| PIN |
Personal Identification Number |
| PING(ICMP) |
Internet Control Message Protokol |
| PLL |
Phase Locked Loop |
| PLMN |
Public Land Mobile Network |
| POP3 |
Post Office Protocol Version 3 |
| PPP |
Point to Point Protocol |
| PRES |
Presence |
| PRN |
Pseudo-Random Noise Number. The identity of GPS satellites |
| PSD |
Packet switched Data |
| PSU |
Power Supply Unit |
| PTF |
Push-to-Fix |
| PTM |
Packet Transfer Mode |
| PUK |
Personal Unblocking Key |
| PW |
Password |
| R&TTE |
Radio and Telecommunication Terminal Equipment |
| RAM |
Random Access Memory |
| RAS |
Remote Access Service |
| RC |
Mobile Equipment list of received calls |
| RF |
Radio Frequency |
| RI |
Ring Indicator |
| RMC |
Recommended Minimum Specific GNSS Data |
| RMS |
Root Mean Square (value) |
| ROM |
Read-only Memory |
| RP |
Receive Protocol |
| RTC |
Real Time Clock |
| RTCM |
Radio Technical Commission for Maritime Services |
| RTS |
Request To Send |
| Rx |
Receive Direction |
| RxD |
Receive Data |
| RXQUAL |
Received Signal Quality |
| SA |
Selective Availability |
| SAR |
Specific Absorption Rate |
| SDI |
Data input |
| SDO |
Data outout |
| SDU |
Service Data Unit |
| SELV |
Safety Extra Low Voltage |
| SIM |
Subscriber Identification Module |
| SK |
serial data clock |
| SM |
SIM phonebook |
| SMTP |
Simple Mail Transport Protocol |
| SMS |
Short Message Service |
| SMS/PP |
Short Message Service/Point - to - Point |
| SNTP |
Simple Network Protocol |
| SRAM |
Static Random Access Memory, a type of memory that temporarily keeps its information that processor use to execute instructions. Should the device be switched off and no external backup battery connected, it lose the contents of SRAM forever. |
| SSH |
Secure Shell |
| SSTE |
Satellite Signal Tracking Engine |
| STA |
Status |
| SW |
Software |
| T |
Time in seconds |
| TA |
Terminal adapter (e.g. GSM engine) |
| TCP |
Transmission Control Protocol |
| TDMA |
Time Division Multiple Access |
| TE |
Terminal Equipment, also referred to as DTE |
| Telnet |
Network Terminal Protocol |
| TP |
Transmit Protocol |
| TTFF |
Time to First Fix |
| Tx |
Transmit Direction |
| TxD |
Transmit Data |
| UART |
Universal asynchronous receiver-transmitter |
| UI |
User Interface |
| URC |
Unsolicited Result Code |
| USB |
Universal Serial Bus |
| USSD |
Unstructured Supplementary Service Data |
| UTC |
Universal Time Coordinated |
| VSWR |
Voltage Standing Wave Ratio |
| VTG |
Course Over Ground and Ground Speed |
| WAAS |
Wide Area Augmentation System |
| WAP |
Wireless Application Protocol |
| WWW |
World Wide Web |
| ZZ |
Type of supplementary services: All Services, Barring Services |
