Patent ID: 8264989
Filing Date: 2012-09-11
Classification: G06F,H04L

Abstract:
1. A method for maintaining VoIP server software in a VoIP server apparatus which transmits/receives a packet to/from an IP terminal via a network to provide a VoIP service, the method comprising: assigning a virtual IP address to the VoIP server apparatus; associating a first IP address used by first VoIP server software with the virtual IP address; activating second VoIP server software while the first VoIP server software receives a packet addressed to the virtual IP address and provides a VoIP service; changing the association of the virtual IP address with the first IP address to association of the virtual IP address with a second IP address used by the second VoIP server software; receiving a packet addressed to the virtual IP address by the second VoIP server software; changing a VoIP service by the first server software to a VoIP service by the second VoIP server software; and wherein a version of the second VoIP server software is newer than a version of the first VoIP server software.