A system and method for routing an incoming telephone call to a mobile terminal (106) which is a combined cordless phone and mobile phone. The call will be connected over either a fixed network (104) or a mobile network (102) depending on whether the mobile terminal is within or out of radio coverage of a home base station (110) connected to the fixed network. The call is routed in response to a routing indication which is included in the called number of the mobile terminal depending on the location of the mobile terminal. In this way, network operators may direct calls over the fixed network in preference to the mobile network, thereby relieving the mobile network. A single telephone number can also be used for the combined cordless phone and mobile phone.