Nokia 22 用户手册

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AAC 

Automatic Area Code

AC Alternating 

Current

CLI

Calling Line Identification

DC

Direct Current

DTMF

Dual Tone Multi Frequency

EFR

Enhanced Full Rate

ETSI

European Telecommunications 
Standards Institute

FSK

Frequency Shifting Keying

FR

Full Rate

GSM

Global System Mobile

HR

Half Rate

HSCSD

High Speed Circuit Switched Data

IOF

Intensity of Field

MO

Mobile Originated

MT

Mobile Terminated

PBX

Private Branch Exchange

PC

Personal Computer

PIN

Personal Identification Number

PSTN

Public Switched Telephone Network

PUK

PIN Unblocking Key

SIM

Subscriber Identity Module

SMS

Short Message Service