A method for providing a multi number service using a universal integrated circuit card (UICC) comprises the steps of: according to a command received from the outside of a UICC, selecting any one subscriber identification information set among a plurality of subscriber identification information sets stored in a memory allocated to a subscriber identification information set managing application; and activating the selected subscriber identification information set.

A method for providing a multi number service using a universal integrated circuit card (UICC) comprises the steps of: according to a command received from the outside of a UICC, selecting any one subscriber identification information set among a plurality of subscriber identification information sets stored in a memory allocated to a subscriber identification information set managing application; and activating the selected subscriber identification information set.

A user equipment and a method for selecting a public land mobile network (PLMN) are provided. The method includes performing a PLMN selection, wherein the PLMN selection is configured to be used in a standalone non-public network (SNPN), obtaining at least one mobile country code (MCC) from a wireless communication service provider according to the PLMN selection for the SNPN, and storing the at least one MCC.

A user equipment and a method for selecting a public land mobile network (PLMN) are provided. The method includes performing a PLMN selection, wherein the PLMN selection is configured to be used in a standalone non-public network (SNPN), obtaining at least one mobile country code (MCC) from a wireless communication service provider according to the PLMN selection for the SNPN, and storing the at least one MCC.

There are provided systems and methods of using the systems to make telecommunications. The systems and methods include application software on a user phone, and a telecommunications apparatus, or computer communication network, configured to make communications for the user. The system permits the user to carry out steps including opening the software app on a mobile phone, as a source telephone; making a communication with a target telephone of another through the app; and receiving a response to the communication, where the response includes a GPS location of the target telephone. The GPS location is displayed on the telephone user interface of the source telephone. In the systems, the numeric telephone identification of the source telephone device, and/or the numeric telephone identification of the target telephone device may be masked.

There are provided systems and methods of using the systems to make telecommunications. The systems and methods include application software on a user phone, and a telecommunications apparatus, or computer communication network, configured to make communications for the user. The system permits the user to carry out steps including opening the software app on a mobile phone, as a source telephone; making a communication with a target telephone of another through the app; and receiving a response to the communication, where the response includes a GPS location of the target telephone. The GPS location is displayed on the telephone user interface of the source telephone. In the systems, the numeric telephone identification of the source telephone device, and/or the numeric telephone identification of the target telephone device may be masked.

The present invention solves communication disruption problems during the hand-off transition period by using a pre-handoff registration of a new foreign agent on behalf of the mobile node The pre-handoff registration message should: (1) identify itself as a pre-hand off registration message, (2) indicate direction of traffic for the pre-handoff registration time period, and (3) specify a lifetime or time period when the pre-handoff registration request will continue to be considered valid The local mobility anchor will accept traffic using the pre-handoff registration care-of address depending on the directionality indicator, but the communication traffic to or from the mobile node will not be disrupted during the transition period. Because the care-of address for the mobile node on the new foreign network can be used to direct communication traffic to or from the mobile node during this transition time period, no disruption of service will be encountered.

The present invention solves communication disruption problems during the hand-off transition period by using a pre-handoff registration of a new foreign agent on behalf of the mobile node The pre-handoff registration message should: (1) identify itself as a pre-hand off registration message, (2) indicate direction of traffic for the pre-handoff registration time period, and (3) specify a lifetime or time period when the pre-handoff registration request will continue to be considered valid The local mobility anchor will accept traffic using the pre-handoff registration care-of address depending on the directionality indicator, but the communication traffic to or from the mobile node will not be disrupted during the transition period. Because the care-of address for the mobile node on the new foreign network can be used to direct communication traffic to or from the mobile node during this transition time period, no disruption of service will be encountered.

A telecommunication network provides telecommunication service to a user equipment (UE) and a communication device that is connected to the telecommunication network via a private branch exchange. Both the UE and the communication device utilizing a Mobile Station International Subscriber Directory Number (MSISDN) for the telecommunication service, and the telecommunication network stores a profile associating both the UE and the communication device with the MSISDN. Additionally, the telecommunication network enables communication between the communication device and a communication partner device and notifies the UE of the communication.

A telecommunication network provides telecommunication service to a user equipment (UE) and a communication device that is connected to the telecommunication network via a private branch exchange. Both the UE and the communication device utilizing a Mobile Station International Subscriber Directory Number (MSISDN) for the telecommunication service, and the telecommunication network stores a profile associating both the UE and the communication device with the MSISDN. Additionally, the telecommunication network enables communication between the communication device and a communication partner device and notifies the UE of the communication.