Symptom Internal error is seen when you try to upload and configure firmware through the phone firmware wizard.
Conditions It is not recommended to run a third party FTP server while using the phone firmware wizard in Cisco CP. In case a third party FTP server is running on the PC, an error message Upload Failed as port 21 is already in use by some other application is displayed on the Configure Phone Firmware screen. If you try uploading firmware, the internal error message is seen.
Workaround Third party FTP server should not be running when you configure phone firmware using Cisco CP.
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...