I am having 7975G IP phones registered in CUCM but whenever i put POE cable or power cable to power it on, it stucks to "Upgrading" and doen't go further. CUCM version is 8.6 and Device defaults of 7975 is SCCP75.9-2-1S. I have tried doing factory reset (power off then power on # button then 123456789*0#) also but is not working. Can anyone help here?
IntroductionCUCM Routing RulesDial String implementation PolicyCUCM Routing LogicSIP URI Call Routing Analysis+++ Case Study: 1 ++++++ Case Study: 2 +++Conclusion
Over the last few months, I have had the privilege of working on SI...
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...