we changed the subnet mask and moved the DHCP server on network now getting Option 128 missing

[IPPY]

Hello, after changing subnet mask and setup new server DHCP the mitel 5312 units displaying Option 128 missing.

If appears the handsets can't find the new DHCP. Any ideas on how to get the handsets to find new DHCP to get IP?

Thanks in adavance - Joe

 

[nytalkin]

Try defaulting the phones then let them reboot

I suppose you're entitled to your opinion, I'm just not going to suppose very hard.