3.14 Glossary of TermsDTMFDual Tone Multiple Frequency tones. The numeric keys 0 to 9, and∗ and # will generatedifferent DTMF tones when pressed during conversation. These are used to accemail, paging and computerised home banking.GSM Global System for Mobile communications. The name given to the advanced digittechnology that your telephone uses.Home country The country where your home network operates.Home network The GSM network on which your subscription details are held.Lock code Used for security of your telephone. Factory set to “0000”.Message CentreWhere messages are sent before they are forwarded onto their destination. TheCentre telephone number may be programmed into your SIM or supplied by your sprovider.NetworkoperatorThe organisation responsible for operating a GSM network. Each country will hone network operator.Password Used for the control of the call bar function. Supplied by your service proviPIN Personal Identification Number used for SIM security. Supplied by your servicPIN2 Personal Identification Number used for the control of Fixed Dial Memory andmetering. Supplied by your service provider.PUK/ PUK2 PIN/PIN2 Unblocking Key. Used to unblock the PIN/PIN2. Supplied by your serviRegistration The act of locking on to a GSM network. This is usually performed automaticaltelephone.Roaming The ability to use your telephone on networks other than your Home network.Service providerThe organisation responsible for providing access to the GSM network.SIMSubscriber Identification Module. A small smart-card which stores unique subsuser-entered information such as Phone Book, Fixed Dial Memory and short messSupplied by your service provider.SupplementaryserviceNetwork-controlled GSM functions which your telephone will support. Supplemenmay only be available on a subscription bases.Wild numbers Spaces in a stored telephone number. When the telephone number is recalled prnumeric key will fill in a space. This can be used to restrict dialling to aMCUK980101C8 Section3 Issue1Service Manual 3 -15 Revision0OPERATING INSTRUCTIONS