FAQ

6900 Phones via MBG show 'call failed' on answer
6900 phones connecting via an MBG and they show 'call failed' when the call is answered. It could be that you have only partially configured SRTP ...
Fri, 16 Nov, 2018 at 2:38 PM
6900 Change back to MINET Firmware
Please see the attached guide on how to revert the firmware back to MINET.
Fri, 3 May, 2019 at 12:15 PM