VVX 300 sets won't register

[frank6160]

Changing 3 IP 601 sets to VVX 300. First registered no problem. Changed set type and mac saved, switched set and it came up. I have 2 more that will not register.

[Anonymous]

Try factory defaulting the phones. Sometimes i had to do that several times before they came up

Hold down 1-3-5 at the same time. Then enter 456 for password.

-Mark

[Anonymous]

Frank, did defaulting the handset resolve the issue? Thanks

Jay

[frank6160]

defaulting one of sets resolved issue. Also found customers IT vendor had been on site and for some unknown reason had another DHCP server running on network. I statically assigned provisioning server in sets and then they registered. IT  to disable other DHCP