Phone issues

[Chris Barron]

could I add something to this thread concerning the underlying networking. Is it a flat DHCP and NAT network behind a router with phones and PCs plugged into the same switches. One thing that always alarmed me about MS and Skype was its approach to networking.

I have seen problems similar to those described attributed to problems with Vlan'ing and LLDP, where the settings in the switch were not in step with the settings in the phone In some instances there was no real vlan applied but the switch LLDP settings interacted with the phone, flipping it on and off the network under normal operation the events were too short to take the phone offline. If there are no vlans needed the best option would be to turn off lldp in the phone and the switch.

chris