公开(公告)号：US20180295015A1

公开(公告)日：2018-10-11

申请号：US16009690

申请日：2018-06-15

Applicant: MITEL NETWORKS, INC.

Inventor： KENT A. FRITZ

IPC: H04L12/24 ,  H04L29/14 ,  H04L12/939 ,  H04L29/12 ,  H04M7/00

Abstract: A failover system includes a plurality of configuration controllers and a plurality of switches. The switches include a site proxy, a failover module and a routing table. A first site proxy of a first switch is designated as the active proxy and controls failover in the event a switch fails or otherwise becomes unavailable. A second site proxy of a second switch is designated as the backup proxy and controls failover in the event the first switch fails or otherwise becomes unavailable. In the event a switch fails or otherwise becomes available, the active proxy interacts with the configuration controller and reassigns the extensions associated with the failed switch to a different switch of the plurality of switches. If a configuration controller fails or otherwise becomes unavailable, another configuration controller becomes active and establishes communication with the plurality of switches to maintain the operational status of the IP telephony system.