Abstract: A cell-phone comprising a set of executable instructions that configures the cell-phone to receive and display a menu showing a plurality of service plans for selection by the user, each service plan being characterized with one or more terms under which the user uses the services of a cell-phone phone network; determine a selection that a user makes; and transmit a message via a communication network making the selection of the service plan known.

Abstract: A method for establishing for a first smartphone a phone connection with a second smartphone, each smartphone comprising a phone and running a software application (“app”), the method comprising: exchanging, by operating the app, at least one permission message between the first and second smartphones; transmitting a first identifier from the first smartphone and a second identifier from the second smartphone to a call connector, responsive to a successful exchanging of the at least one permission message; and connecting a first phone call and a second phone call to establish a phone connection between the first and second smartphones, if the first phone call matches the first identifier and the second phone call matches the second identifier.

Abstract: A method for establishing for a first smartphone a phone connection with a second smartphone, each smartphone comprising a phone and running a software application (“app”), the method comprising: exchanging, by operating the app, at least one permission message between the first and second smartphones; transmitting a first identifier from the first smartphone and a second identifier from the second smartphone to a call connector, responsive to a successful exchanging of the at least one permission message; and connecting a first phone call and a second phone call to establish a phone connection between the first and second smartphones, if the first phone call matches the first identifier and the second phone call matches the second identifier.

Abstract: A method of authenticating a user to each of a plurality of services provided by at least one service provider, the method comprising: providing the user with a smart card having stored therein a plurality of authentication keys and comprising communication circuitry for communicating with a communication device that the user uses to communicate with the at least one service provider; and communicating with the smart card to authenticate the user responsive to an authentication key of the plurality of authentication keys.

Abstract: A method transmits information in a communication system. The method includes transmitting information from a transmitting device to a receiving device through a communication channel, checking whether the receiving device has received the information without errors, and transmitting an acknowledgement notification from the receiving device to the transmitting device if the receiving device has received the information without errors. The acknowledgement notification includes an indication of a capability of the receiving device to receive further information from the transmitting device.

Abstract: An Ethernet adapting apparatus for data transfer between a standard Ethernet data pump and an Ethernet medium access controller via telecommunication medium (4), comprising: (a) a dual mode media independent interface (9) which emulates in a PHY mode the standard Ethernet data pump and which emulates in a MAC mode the Ethernet medium access controller; (b) a data pump (10) connected to the telecommunication medium (4); (c) a data buffer (11) for storing at least one Ethernet data package to be transferred between the standard Ethernet data pump and the Ethernet medium access controller.

Abstract: An Ethernet adapting apparatus for data transfer between a standard Ethernet data pump and an Ethernet medium access controller via telecommunication medium (4), comprising: