Patent ID: 7990953
Filing Date: 2011-08-02
Classification: H04L,H04M

Abstract:
1. A distributed VoIP system comprising: a network; a first switch at a first site coupled to the network, wherein the first switch is configured to provide telephony services to a first communication device, the first site comprising a first grouping of resources having first configuration requirements; a second switch at a second site coupled to the network, wherein the second switch is configured to provide telephony services to a second communication device, the second site comprising a second grouping of resources having second configuration requirements different from the first configuration requirements; and a spare switch coupled to the network, wherein if the first communication device is unable to register with the first switch, the spare switch is configured to provide telephony services to the first communication device, and wherein if the second communication device is unable to register with the second switch, the spare switch is configured to provide telephony services to the second communication device.