Having a strange issue at a remote branch in South Dublin with regards to the Mitel phones over there.
Current setup is as follows
Site is connected to the rest of our WAN (71 UK and Northern Irish sites that run using MPLS over ADSL) by a Router running EZVPN over an Eircom ADSL connection. There are four Mitel 5320 handsets on site that are connecting to a 3300 MCD that is currently hosted in the North East. Each time they power up and attempt to get an IP address, they will sit for hours on end looking for an address even though all ports on the switch are configured with "switchport voice vlan 20" and option 125 is configured on our DHCP server. After about four hours, the phones eventually get an address, although when they attempt to update the process happens all over again.
I'd understand the issue if it was every IP device, but PC's, Printer and the Credit Card machine all pick up an IP on site fine...
Thanks for your help.