Default Password on Polycom IP321 keeps changing by itself
So I have recently bought 2 second hand IP321 phones. They worked fine to start with, entered the default 456 password to get to the advanced settings etc to start provisioning and all was working fine.
Anyway, after getting one phone connected I try to then login to the admin settings again using the same password I used before and it says "sorry, please try again".
I was going to ask whether this has something to do with it now being provisioned, however when I went to set up my second phone, I select advanced settings and lo-and-behold this one doesn't accept 456 either...
It seems to be after I have plugged the ethernet cables in? could this be something to do with it?
I did try resetting the second phone with the MAC address etc, however it doesn't appear to like the MAC address either and comes up with the same message.