A communication system is described that includes a mobile communication device and a docking station with which the mobile communication device can be selectively engaged and disengaged. The mobile communication device includes telephony logic that enables a user to conduct a voice call using a first speaker/microphone and/or a first network interface provided by the mobile communication device when the mobile communication device is disengaged from the docking station and that enables the user to conduct a voice call using a second speaker/microphone and/or a second network interface provided by the docking station when the mobile communication device is engaged with the docking station. The telephony logic is also capable of dynamically switching between the use of the first and second speakers/microphones and/or the first and second network interfaces in response to detecting engagement or disengagement of the docking station during a voice call.