A telephone docking station for a personal digital assistant provides a simple docking arrangement in conjunction with a basic telephone circuit that exploits all of the resident intelligence of a PDA in connection with the telephone circuit to extend the PDA's functionality to the telephone, while extending the telephone's communications capability to the PDA. The docking arrangement preferably consists of a docking slot or port provided within the telephone housing itself by which the PDA is readily received and secured to the telephone, and by which an electrical interconnection or infrared (i.e. digital) is made to the telephone circuitry within the telephone housing. Software installed on the PDA implements desired communications functions, such as automatic dialing of a phone number stored in the PDA directory, the receipt and transmission of email, provides the ability to access electronic networks, such as the Internet, e.g. to browse the World Wide Web, and various custom calling services such as: three-way calling, call forwarding caller-id blocking, and call return.