Glad to find this forum, my dealer has installed a 5200 this week, and we are to cutover on the 19th.
Had a big problem with this box and DHCP, as I have a dhcp server that has 4 scopes, each in a different vlan.
The option 43 was setup correctly, and what was happening;
vlan-1 was client pc
vlan-99 was mitel endpoints
If I had the endpoint setup and connected, it would not get a ip, just stay at dhcp discovery.
If I made the port where vlan 99 was the only vlan active it worked great, but the end-users pc was not active now on the
correct vlan.
SOooo, I took my dhcp server, and statically setup a ip on one of the extra NICs, like 192.168.99.250
then every time a endpoint wanted an ip, it worked just fine.
I am looking forward to testing with remote phones in our other offices.