OK, I've got a test environment with one Aastra 6865, one Aastra 6867 and a Mitel 5340 (in SIP mode) connecting to Freeswitch 1.4 (latest stable). All three phones can individually come up and connect successfully to the FS, then dial appropriately. They are all connected using a Netgear FS116P POE switch in a flat environment.
However, if I bring up the Aastra phones, wait for them to be connected, then bring up the Mitel 5340 in SIP mode, the Aastra phones will CRASH when the Mitel phone reaches the LLDP search as part of its' bootup. Then the Aastra phones themselves will sit at their own LLDP search and not boot further, even if I take the Mitel 5340 out of service. I must manually power-cycle the Aastras to bring them back into service.
I've tried moving them to another switch (Trendnet 8-port POE) in case there was a switch problem, but the issue is replicable there too.
Has anyone seen anything like this before? Is there something in Aastra's implementation of LLDP that conflicts?