Hello,
I have around 50 Cisco IP Phone 7821 in a same subnetwork, all of them works with the same Asterisk PBX.
Some of the phones sometimes starting to play music without any interaction. When the music started (it's not moh or any ringtone) I can not do anything with the phone, only reboot fix it. This happens around weekly with random phones.
On server side in logs I couldn't find anything and in the phone logs shows nothing as well.
Has anyone noticed a strange error like this?
Current versions:
Asterisk 13.18.3
Phone firmware: sip78xx.11-0-0MPP-7
Thank you!
