Hi all, My CP8851-3PCC phone can't register as asterisk extesion, after submitting changes phone reboots and begins key blinking. I try to reset it to factory defaults, but after reset on first time boot phone requires activation code. There was installtd 11-0-0MPP-7 firmware. I upgrade it to 11-2-3, and then 11-3-1, but without any luck.Another phone (same model) works good with this Asterisk server. When I check status with identical configuration, I find only 1 difference - Client certificate: Not Installed Please, help how can I resolve the issue. Thanks in advance.
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