Nokia Mobile Phones Limited

Jorma Antero Seppanen

The quality of radio frequency signals received at a mobile phone or cellphone is sampled. The results are employed to produce a human discernible indication such as by blinking a received signal strength bar on a display. The bar remains constant without blinking if the signal quality is at or below a preselected minimum and can have the blinking rate increase as the sensed signal quality decreases. Distortion can be determined in either the digital or analog mode. Digital signal quality can be reflected in the sensed bit error rate while the level of analog signal quality can be determined from the supervisory audio tone.

Signal quality indicator apparatus and method particularly useful for mobile telephones

A mobile terminal is provided with an access code for a destination receiving device. The access code specifies that the user terminal provide a communication signal through at least one communication network to the destination receiving device. The at least one communication network is assumed to have a capability of forwarding received communication signals that include access codes having a predetermined format to destination receiving devices. A determination as to whether a format of the access code provided to the user terminal differs from the predetermined format is performed. If these formats differ, another step includes modifying the format of the access code provided to the user terminal to produce a modified access code having the predetermined format in the communication signal.

Call dialing for a mobile terminal operating within a public or autonomous system

A cellular radiotelephone (user terminal) (,) includes a keypad (,) having a plurality of keys (,) and a display device (,) for displaying information, including messages, to a user. A method includes the steps of providing the user terminal with an access code for a destination receiving device, and specifying that the user terminal provide a communication signal through at least one communication network to the destination receiving device. The at least one communication network is assumed to have a capability of forwarding received communication signals that include access codes having a predetermined format to destination receiving devices. In response to specifying step, another step is performed that includes determining whether a format of the access code provided to the user terminal differs from the predetermined format. If these formats differ, another step includes modifying the format of the access code provided to the user terminal to produce a modified access code having the predetermined format. A further step includes providing the communication signal, including the modified access code, through the at least one network to the destination receiving device corresponding to the access code originally provided to the user terminal.

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Irving, TX, United States of America

Jorma Antero Seppanen