a “ personal addressing service ,” which from the point of view of the user is not specific to either network , with the following service scope is set up in the landline network and in the mobile telephone network for incoming telephone calls : an opinion will be given further below on generating rate information . when a mobile phone number is dialed — the personal number of the user — first an attempt is made to reach the associated mobile telephone . if this is not possible , e . g ., for example because of a lack of cellular coverage , the phone is shut off , etc . and in fact , depending on what the user has preset , either the associated mobile telephone voice mail will be selected immediately or first the landline connection defined by the user . for each of the landline numbers , the user can assign an attribute ( number type ) that can have one of the three values if it is a case of an “ individual number ” in the landline number , the user can assign a mobile telephone number . after selecting the landline number , first all connected telephones including the telephone in cordless mode will ring , while after expiration of a time period , which can be defined by the user if desired , there will be a forwarding directly to the personal answering system or first to the mobile telephone and then to the personal answering system . if the landline number is a collective number or a group number , the user can store several mobile telephone numbers . the user can assign a personal statement to each mobile telephone number , e . g ., the name of each user to whom the mobile telephone number is assigned as a personal telephone number . for each personal mobile telephone number there can be an initial specification of whether the mobile phone will answer first or whether the personal answering system will answer immediately . if during the selection of the landline connection the call has not come yet within the time that was specified by the user , the caller is asked to decide on an individual user (“ who would you like to speak to ?— press 1 for eva meier or 2 for fritz meier .”). depending on the user - defined settings , the caller will first be connected with the previously defined mobile telephone connection or immediately with the associated personal answering system . an abbreviated dialing number can be defined for the individual telephone numbers of the household members , which serve for individual communication between members of the household . in addition , the user has the option of changing the service settings either using the telephone keypad or by data communication , e . g ., using the world wide web ( www ). as regards rate setting , with outgoing calls the rate can be set depending on the current mobile telephone operating mode ( cordless or cellular ) by the ( implicit ) selection of the network . for incoming calls , the rate is set depending on the actual number called , at which the user is reached before the answering system . the requirement for this is that rate information data signal the network of origin and can be processed there . if this is not possible , for example for technical reasons or because the appropriate agreements have not been made , the corresponding share of the call — depending on what has been set by the user — can either be charged to the user subscriber or the caller will be connected to the personal answering system . the “ personal addressing service ” takes care of preparing the rate information and orders the signaling in the network of origin . if the portion that has been forwarded has to be invoiced to the user subscriber , either an inquiry is made to the user subscriber of whether he will assume the costs or the call is placed immediately if the user has already set it up this way . dual mode terminals can currently be implemented in the combination dect / gsm ( gsm 900 or gsm 1800 ). in this case , the cordless station is a conventional ( gap ) dect station . in 1999 , the gsm cordless telephone system was set up in mobile telephone standardizing ( etsi - smg ). this solution will also produce the required dual mode functionality . from the point of view of the user , the “ personal addressing service ” will be presented as though it were non - network - specific . this can be achieved in that a common in platform is provided for the landline and mobile telephone network on which the service described is available . however , there are also divided service logics for the two networks with service control points ( scps ) in both networks . the user has access to his service parameter by way of a non - network - specific service management access point ( smap ). in the drawing , the invention is shown - in part schematically and as an example . fig1 shows a schematic representation to illustrate the basic concept and the basic principle can be seen in fig1 . in his home cell , the user telephones using his landline connection , when he is away from home he uses , as usual , the mobile telephone network . the telephone numbers shown should be understood as data used as an example and can be replaced by any telephone numbers . fig2 shows divided service logics for the two networks with scps in both networks , whereby the user has access to his service parameters by using a non - network - specific service management access point ( smap ). the characteristics described in the summary , in the patent claims and in the description , as well as those that can be seen in the drawing , can be present both individually as well as in any combination for implementing the invention .