I have uc520 and 9 ip phones and 4 7921g wireless phones. The 9 ip phones are working fine but there is an issue with 7921g ip phones. Out of 4 2 wifi phones are registered fine, but the other two are saying locating network services. and they come up saying connection failed. i have given the same config on all the 4 ip phones. The two phones are giving the same error. And one more question does the usb cable for upgrading firmware for 7921g comes by default or do we have to buy? Please give me some suggestions.
I am giving the devices list that i am using
uc520, dlink 4port wireless router, and 7921g phone