The 3 new IPs of the GXP1610 phone in turn hang up once in 1-2 days, stop responding when buttons are pressed, and do not ping from the network, power reset helps.
Phones are connected via an uninterruptible power supply with AVR function
For the test, the phone was installed Linksys, it is already working the 4th day, there is no gap with it.
PBX is used by Asterisk 13
problem on video