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Z500a
54 June 2004
GSM system
The GSM system family includes GSM 850, GSM 900,
GSM 1800 and GSM 1900. There are different phases of
roll-out for the GSM system and GSM phones are either
phase 1 or phase 2 compliant.
GSM 1800
Also known as DCS 1800 or PCN, this is a digital
network working on a frequency of 1800 MHz. It is used
in Europe and Asia-Pacific.
HR
Half Rate, speech coding.
HSCSD
High Speed Circuit Switched Data.
HTML
HyperText Markup Language.
HTTP
HyperText Transfer Protocol.
IrMC
Infrared Mobile Communications standard.
ISP
Internet Service Provider.
ITTP
Intelligent Terminal Transfer Protocol.
LED
Light Emitting Diode.
LAN
Local Area Network.
LPC
Linear Prediction Coder
LTP
Long Term Predictor
ME
Mobile Equipment.
Micro browser
Accesses and displays Internet content in a mobile
phone, using small file sizes and the bandwidth of the
wireless-handheld network.
MMI
Man-Machine Interface, see UI.
MP3
Short for “MPEG layer 3”, an effective audio coding
scheme.
MS
Mobile Station.
MT
Mobile Termination.
ODI
Object Distribution Indicator.
OMA
Open Mobile Alliance.
OTA
Over-the Air Configuration. To provide settings for the
phone by way of sending an SMS message over the
network to the phone. This reduces the need for the user
to configure the phone manually.
PDA
Personal Digital Assistant.
PDP
Packet Data Protocol.
Phonebook
A memory in the mobile phone or SIM card where phone
numbers can be stored and accessed by name or position.
PIM
Personal Information Management.
RPE
Regular Pulse Excited
SMS-C
Service Center (for SMS).
Service provider
A company that provides services and subscriptions to
mobile phone users.
SI
Service Indication.
SL
Service Loading.
SIM card
Subscriber Identity Module card – a card that must be
inserted in any GSM-based mobile phone. It contains
subscriber details, security information and memory for a