111GGlloossssaarryy ooff TTeerrmmssDCSDigital cellular network standard based on the GSMnetwork architecture. With the higher frequencyrange (1800 MHz for DCS instead of 900 MHz forGSM), more radio channels can be made available,thus allowing the network to support moresubscribers and traffic.Dual BandAbility to operate with both DCS (1800 MHz) andGSM (900 MHz) networks. The phone automaticallyuses the network with the strongest signal and evenswitches networks during a call within the sameoperator’s network.GSM (Global System for Mobile Communication)International standard for cellular communication,guaranteeing compatibility between the variousnetwork operators. GSM covers most Europeancountries and many other parts of the world.Line Identification ServicesServices allowing subscribers to view or block thetelephone numbers of callers.110Glossary of TermsTo help you understand the main technical terms andabbreviations used in this booklet and take fulladvantage of the features on your mobile phone,here are a few definitions.Active FolderAbility to answer a call simply by opening the phone.Call BarringAbility to restrict outgoing and incoming calls.Call DivertingAbility to reroute calls to another mobile or fixedline.Call HoldingAbility to put one call on standby while answering ormaking another call; you can then switch betweenthe two calls, as required.Call WaitingAbility to inform users that they have an incomingcall when engaged on another call.