I am trying to get into the web configuration for already provisioned 410's and 500's. The default 456 for the admin and 123 for user passwords are not working on any phone. Does RingCentral change them before sending them??
When a phone is purchased from RingCentral the phones are locked by default. The phones are provisioned with RingCentral's information into the device. By requesting the phones to be unlocked by RingCentral, the warranty will be voided and it can possibly cause the phone to be unstable. Unlocking the device can put the phone at risk if someone is access it and is not sure what they are doing... they can break the phone.
If you do factory reset the phone, then the password is Polycom's password and will always be 456 - that is Polycom's default password.