Hello Joe, Since Voice hunt groups are subject to the "max-redirect" restriction, I would suggest to increase its value, by default it is "10" it is a global command under the telephony-service. for example: telephony-service max-redirect 20 I think what is causing the problem in your call flow is the number of times call is being redirected. I hope that this will help. Thanks, Faris ... View more

It seems to be a Kernel panic, a problem with mounting root file system. I think that it will be better to open a case with Cisco Tac to troubleshoot, I do agree that i might end up with an RMA for the whole unit. Thanks, Faris ... View more

Hello Andrew, I think that it will be a good idea to proceed with the boot helper procedure while facing this behaviour. UC 500 Boot Helper Instructions: https://supportforums.cisco.com/docs/DOC-13686 I hope that this helps. Thanks, Faris ... View more

Hello Jan, I think that problem may be related to the SIP signalling and media Binding, to confirm that can you attach/send the following debugs for a internal call to the CUE: debug voip ccapi inout debug ccsip all and a "show tech" while facing the problem. do this in after business hours. Thanks, Faris ... View more