Patent ID: 8805399

Claim:
A method comprising: receiving a call on a number associated with a mobile device including a telephony communication link; linking the mobile device to a base telephone system using a link while the call is ongoing, the base telephone system including a different independent telephony communication link, wherein linking the mobile device to the base telephone system includes extending one or more call functions supported by the mobile device to the base telephone system, wherein the one or more call functions are not available on the base telephone system before the linking, and wherein extending the one or more call functions supported by the mobile device to the base telephone system comprises associating a respective control element of the base telephone system with each call function extended to the base telephone system; and using the link, supporting the ongoing call using the base telephone system, wherein supporting the call comprises: displaying, on the base telephone system, information related to the call received on the number associated with the mobile device; receiving, while the call is ongoing, a user input selecting a control element on the base telephone system; and executing, while the call is ongoing, the call function supported by the mobile device and extended to the base telephone system that is associated with the selected control element.