Abstract: A first invite message including a parent device identifier assigned to a parent device is received. The first invite message refers to an incoming call or an outgoing call. The incoming call or the outgoing call are then routed between a parent telephony application server (TAS) allocated to the parent device and a child TAS allocated to a child device. In some cases, the child device is a mobile child device that is registered with an Internet Protocol (IP) multimedia subsystem (IMS) network using a unique identifier that is associated with a child device identifier assigned to the mobile child device. The parent TAS is able to store the child device identifier and the child TAS is able to store the parent device identifier.

Abstract: A first invite message including a parent device identifier assigned to a parent device is received. The first invite message refers to an incoming call or an outgoing call. The incoming call or the outgoing call are then routed between a parent telephony application server (TAS) allocated to the parent device and a child TAS allocated to a child device. In some cases, the child device is a mobile child device that is registered with an Internet Protocol (IP) multimedia subsystem (IMS) network using a unique identifier that is associated with a child device identifier assigned to the mobile child device. The parent TAS is able to store the child device identifier and the child TAS is able to store the parent device identifier.

Abstract: A method and apparatus for providing control and monitoring of a group of plain old telephone service (POTS) stations from one control station. Incoming calls to the POTS stations are intercepted and the data describing the call is sent to the control station. The control station then provides directions for blocking the call, completing the call to the original POTS destination, or completing the call to another POTS destination. Outgoing calls are also monitored so that the control station maintains an up to date record of which stations are busy and which stations are idle. Advantageously, the control station communicates with the switch serving these POTS stations by analog signals (FSK) and/or DTMF thus overcoming the limitations on distance requirements for digital signaling.