| Is your DHCP option 125 formatted correctly?
Do you run any form of NAC (network access control) or intruder detection / QOS on the network?
Are VLAN's set up statically or is this done dynamically with GVRP?
I strongly advise you use Wireshark to sniff what the phone is doing on the network, it can solve problems like this in seconds.
Last edited by marklamond; 07-11-2008 at 08:15 PM. |