We ran into an undocumented bug with version 1.7.0(4709) this past week while installing two CTS-1330s.
CSCtj65903 CFD: CTS 1300:When Doing Mic Calibiration gives an error with 6 mics
Workaround for this defect :
Chang CUCM configuration to 3 table microphones, Once restarted and registered back with CUCM, running the microphone calibration succeeds.
