I work for a company which bought approximately 20 4610sw IP phones about a year ago. Set up switch and was able to pre-install 12 phones with no problems and remaining 8 or so phones seem to be searching for a dhcp server. This work was all done on the same port so I know that it isn't a Cisco router or port problem. I have also tried the mute reset and mute clear functions. I am not sure when I should be starting this process, however the phones always keep looking for the dhcp server and I have let it go up to 1000 seconds. I have also set up another port using a dhcp in hopes of breaking the cycle and clearing the phones memory and have had no luck with this process as well. Thank you in advance for your time.