147GPRS (General Packet Radio Service)New non-voice value-added service that allows informationto be sent and received across a mobile telephone network.GPRS guaranties continuous connection to the Internet formobile phone and computer users. It is based on the GlobalSystem for Mobile Communication (GSM) circuit-switchedmobile phone connections and the Short Message Service(SMS).GSM (Global System for MobileCommunication)International standard for mobile phone communication,guaranteeing compatibility between the various networkoperators. GSM covers most European countries and manyother parts of the world.Multiparty CallingAbility to establish a conference call involving up to fiveadditional parties.PIN (Personal Identification Number)Security code that protects the phone/SIM againstunauthorized use. The PIN is supplied by the service providerwith the SIM card. It may be a four to eight-digit number andcan be changed, as required.146G lossaryTo help you understand the main technical terms andabbreviations used in this booklet and take full advantage ofthe features of your mobile phone, here are a few definitions.Call BarringAbility to restrict outgoing and incoming calls.Call DivertingAbility to re-route calls to another number.Call HoldingAbility to put one call on standby while answering or makinganother call; you can then switch between the two calls, asrequired.Call WaitingAbility to inform users that they have an incoming call whileengaged on another call.CLI (Caller Line Identification) ServicesServices allowing subscribers to view or block the telephonenumbers of callers.EMS (Enhanced Message Service)Network service sending and receiving messages thatinclude images, sounds and animations to and from anotheruser without having to speak to the correspondent.