I have an OXE in version l1.301.40.a, most IP phones are 40X8 models, we are migrating to 80X8, every time a phone goes from 40X8 to 80X8 or vice versa; 80X8 phones are restarted and left with no tftp response message, it is necessary to make several steps for the phones to reconnect. Could it be that the OXE does not support having both models?