161AppendixGlossary of termsMemory low!Message may not bestoredThe message area is full. Your messages cannotbe stored until some of the currently storedmessages are deleted.Verification failureOn changing the PIN/PIN2, verification of the newcode is incorrect - retry changing the PIN/PIN2with correct verification.CSD Circuit Switched Data. A communication method used totransmit data over telephone connections.DTMF Dual Tone Multi-Frequency allows you to communicatewith computerised phone systems, voice mailboxes, etc.GPRSGeneral Packet Radio Service. A GSM transmissiontechnique that transmits and receives data in packetsrather than setting up a continuous channel.GSMGlobal System for Mobile communications. The namegiven to the advanced digital technology that your phoneuses.Infrared A type of wireless connection that allows data to betransmitted directly to another device.Java TMA programming language developed by SunMicrosystems. Programs written in Java do not rely onan operating system.NetworkOperatorThe organisation responsible for operating a GSMnetwork.PIN / PIN2Personal Identification Number. PIN is used for SIM cardsecurity. PIN2 is used for the control of Fixed dialling andCall charges metering. Supplied by your serviceprovider. If the PIN or PIN2 is entered incorrectly severaltimes (basically 3 times), the PIN or PIN2 will be blocked.
