Patent ID: 11956287
Assignee: UNIFY PATENTE GMBH & CO. KG
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 0:
1. A method for automated switchover timer's tuning on network systems or Next Generation Emergency Systems comprising:
(1) sending, by a master node, a heartbeat and/or Address Resolution Protocol (ARP) ping to one or more backup nodes and/or a surveillance unit according to preconfigured switchover timer values to check if the master node is still active;
(2) sending, by the one or more backup node and/or the surveillance unit, an additional first Session Initiation Protocol (SIP) OPTION message to the master node after receiving the heartbeat and/or the ARP ping or if the heartbeat and/or the ARP ping fails to be received according to the switchover timer values;
(3) performing, by an administrator or an administrative unit of the network, a switchover or failover to a backup node in case the first SIP OPTION message is not answered with “200ok” by the master node according to a preconfigured time value;
wherein after the sending, by the one or more backup node and/or the surveillance unit, the additional first SIP OPTION message to the master node:
(4) recalibrating and decreasing, by the master node, the switchover timer values by sending a second SIP OPTION message comprising a new header indicating the altered switchover timer values, in case the heartbeat and/or the ARP ping have been successfully performed, and the first SIP OPTION message has been answered with “200ok” by the master node in the preconfigured time value;
(5) storing, by the master node, the switchover timer values which did not cause a heartbeat and/or ARP ping failure in a database;
(6) repeating steps 1, 2, 4 and 5 until the heartbeat and/or the ARP ping fails; and
(7) recalibrating, by the master node, the last stored switchover timer values which did not cause a heartbeat and/or ARP ping failure from the database by using a SIP OPTION message comprising a header indicating the last stored switchover timer values.