System and method for delivering a call for a mobile station using either a wireless network or a wireline network

A cordless telephone wireline cordless base station for use with a mobile station associated with a wireless network, said mobile station having a directory number in said wireless network, said wireline cordless base station having a directory number in a wireline network that is different from said mobile station's wireless network directory number, said wireline cordless base station comprising:

• sensing means for determining when said mobile station is within a limited radio range of said wireline cordless base station;
• means responsive to said sensing means determining that said mobile station is within said limited radio range of said wireline cordless base station for informing a home location register in said wireless network of the wireline directory number of said wireline cordless base station to facilitate said wireless network to deliver calls to said mobile station's directory number to said wireline cordless base station;
• and
• means responsive to said determining means determining that said mobile station has moved out of radio range to inform said wireless network that said feature is no longer active.

A combination mobile station and wireline cordless base station comprising:

• said mobile station being associated with a directory number in a wireless network;
• said wireline cordless base station being associated with a directory number in a wireline network;
• said wireline cordless base station including sensing means for determining when said wireline cordless base station is within radio range of said mobile station and for identifying to said wireless network the wireline directory number of said wireline cordless base station and for identifying to said wireless network when said mobile station moves out of radio range of said wireline cordless base station;
• and
• said mobile station including means for tuning to a frequency associated with said wireline cordless base station when it is within radio range of said wireline cordless base station and means for tuning to a frequency associated with said wireless network when it is outside of radio range of said wireline cordless base station.