discover message error

[elmasd]

Hi ,

We have a G700,S8300 call manager , suddenly Ip Phone (1600 series )Give Discover Gateway ip error , we can mange the server by http ,we make the ping test from http and it pass , what could be the wrong.

Thankx
Dalia

[dupl6]

Discover Message

Are you making use of DHCP Server or static addressing.

Also please indicate Cm version and the versions of the phones.

When does this happen...During daytime..peak hours ....?