Tools and techniques for seamless enterprise and consumer mobility with multiple numbers are described. The techniques provide simultaneous ringing on a mobile communication device and manage network connections between the mobile communication device and at least two networks. The simultaneous rings are to at least one of a primary number associated with a mobile communication device and one or more identified numbers associated with the primary number. The simultaneous rings are based on a presence and/or physical location of the mobile communication device. The multiple numbers may have associated distinctive ring functions or tones. When the mobile communication device is proximate to the first network, a first detection signal is generated. A first presence signal indicates whether the condition of the connection permits an ongoing communication on the first network. The communication is handed over to a second network when the connection does not permit continuing on the first network.