Updating Network on phone display

[ebrahimkarimi]

Hi,

we have 16 yealink T23G phones and all connected to Cisco 2960x POE switch and the switch has no any configuration, the bridge port of phone is used by PCs.

the problem is during daily time the phone displays "Updating Network" and then displays "Obtaining IP Address", in this situation the phone connection lost and bridge port too, after a few seconds the phones get back to normal situation, why this is occurred and what's the meaning of "Updating Network" message?


please help me to solve this problem
thanks