Patent ID: 7292558
Filing Date: 2007-11-06
Classification: H04L,H04M,H04W

Abstract:
1. A method, comprising: a) a first registering with a centralized home agent having a location central to a plurality of subnets, said first registering in response to a first mobile VoIP device having entered a first region that is within a communicative reach of a first subnet, said first registering identifying said first mobile VoIP device and said first subnet to said centralized home agent, said first subnet not registered as a home subnet for said first mobile VoIP device; and b) a second registering with said centralized home agent, said second registering in response to a second mobile VoIP device having entered a second region that is within a communicative reach of a second subnet, said second registering identifying said second mobile VoIP device and said second subnet to said centralized home agent, said second subnet not registered as a home subnet for said second mobile VoIP device, said home subnet for said first mobile VoIP device being a different subnet than said home subnet for said second mobile VoIP device.