VG224 SCCP registartion

[Maleksalim]

Hello

For VG 224, How much it take to SCCP to go register  from the first CUCM to the second CUCM  ( and the to the third CUCM) when the first is down.

Thank you

[Suresh Subramanian]

By default, SCCP phones send a keepalive to their primary CUCM server every 30 seconds and to their failover node, which is the second node listed in the phone's Call Manager (CM) Group, every 60 seconds.

The phone will wait for three failed SCCP keepalives in a row before considering that node unavailable. After the third failed SCCP keepalive, the phone will fail over to its secondary CUCM server.

Though it is for SCCP IP phones, it is applicable for SCCP VG224 also.

https://supportforums.cisco.com/document/74666/cucm-ip-phone-sccp-keepalive-and-failover-architecture