Hi All,
happy new year to all !! We are facing issue with ip phone registration while we change ASA role in cluster means if Asa master becomes slave then ip phone gets into ip phone registering state and stuck there for 50 to 60 minutes if we don't reboot phones.
this is happening for my all 4-5 sites where ASA is in cluster and it's gateway for all users plus phones vlan. Call manager is in data center and it's too behind the firewall.
Any one has came across this kind of issue ? Data and wireless vlan does not have any impact while ASA role switchover only voice vlan get affected.
