Lee Y Lin

US Patent:

54558581, Oct 3, 1995

Filed:

Oct 1, 1993

Appl. No.:

8/130475

Inventors:

Lee M. Lin - Cupertino CA

Assignee:

Apple Computer, Inc. - Cupertino CA

International Classification:

H04M 127

US Classification:

379355

Abstract:

A method for automatically composing a telephone dialing string for a telecommunication device having a processor, storage, and a connection to an external telephone system, by storing configuration information for a current location of the telecommunication device in fields for local country code and local area code; by storing configuration information for dialing prefixes for a current external telephone system connected to the telecommunication device in fields for a prefix for a local call, prefix for a long distance call, and prefix for an international call; and by storing a desired telephone number in fields for a desired country code, a desired area code, and a desired telephone number. Then, forming a telephone dialing string by the processor comparing like fields of the desired telephone number to the configuration information for a current location to determine the need for international, long distance and local access prefixes followed by non-redundant country code, area code and telephone number information; and sending the telephone dialing string to the external telephone system.