Hi,
i have an issue with IP Console 5500 connect into an older release software.
I have change the keypad and for 1 month i have no problem, but now in the last 2 days the customer says me that the software of IP console disconnect. 
Close the software and reboot the Console, all works fine.
Into log of 3300 i see (when the console disconnect) this information:
17.04.00   Call Control - Maintenance   IP Device   52 (Ext:9)  at location 01 3 01 052 01  The set has been returned to service. 
17.03.59   Call Control - Maintenance   SYSTEM SERVICE: Dept 0 now in NIGHT 1 Service.   Reason: 9   Now in service: Console 9.
17.03.59   Call Control - Maintenance   IP Device   52 (Ext:9)  at location 01 3 01 052 01  The set has been returned to service. 
16.51.57   Call Control - Maintenance   IP Device   52 (Ext:9)  at location 01 3 01 052 01  The set is out of service due to loss of communication. 
16.51.57   Call Control - Maintenance   SYSTEM SERVICE: Dept 0 now in NIGHT 1 Service.   Reason: 11  Now Out of Service: Console 9.
There is a list of reason codes where I can understand the meaning?
Thanks in advance for your support.
Steve