We have the SSID broadcasting and we can connect to it. However once the 7925 new phone connects to call manager the wireless phone signal gone. Even if we just try to make a change changing the 802.11 option from auto-a to auto-b/g and hit save. The phone will default firmware with manufacture T8. Based on that we upgraded the firmware phone to firmware 1.4.6.3 not works then, i tried another firmware upgraded the phone cmterm-7925-sccp.1-4-8-4.k3.cop.sgn. while upgrading signal alright, once upgradation done signal lost..
Kindly Suggest