Hi. I have recently installed a second IPSI card into each of my two port networks. I thought that if one IPSI failed it would automatically switch to the second IPSI in the port network. I peformed a test where I connected a call and disconnected the first IPSI , after 30 secs the call disconnected and the port network did not switch over to the second IPSI resulting an outage for the whole port network . Is this normal ? I have configured all IPSI's the same and can see no reason why this should happen, any advice would be great !