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ip 550 -i cant reset the phone not with s/n or 456 or anything else

Occasional Contributor

ip 550 -i cant reset the phone not with s/n or 456 or anything else




I got a ip-550 from my cousin .


i cant  reset the password and i cannot get the phone to work cause ringcenteral cannot update the phone system without it .

i tried 456 and 123 or the S/N  as well . but nothing get the phone to reset or enter the advanced settings.


how can i get this reset ??



Message 1 of 3

Re: ip 550 -i cant reset the phone not with s/n or 456 or anything else

good reference point:


from that link:

NOTE: Please be aware that Polycom does not provide a public guide on how to reset the Administrator password (456) if this has been changed as also explained => here <= !



can you get to the advanced settings on the menu? (or is that locked too?)



you MIGHT be able to hold 4,6,8 and * during boot to factory reset the phone too... but you might need a support case to reset the admin password (pay per incident most likely)

Message 2 of 3
Polycom Employee & Community Manager

Re: ip 550 -i cant reset the phone not with s/n or 456 or anything else

Hello tripiatrik,

welcome back to the Polycom Community.

Did you ever fix this issue => here <= ?


For your new issue we do not disclose within this official Polycom community how to reset the Phones if the Admin Password is lost.

Many of our partners utilize these phones and offer services so we cannot publicly disclose the procedure to do so.

If your phone is still able to connect to the Provisioning server please reset the password via the Device Parameters documented in the Admin Guide or here

The above is also stated in the Read First: Welcome to the Polycom VoIP Forum

If this is not possible please contact your Polycom reseller or the person you purchased the phone from. As this is your cousing you should be able to get the password.

I will close this post.

Best Regards

Steffen Baier

Polycom Global Services

The title Polycom Employee & Community Manager is a community setting and does not reflect my role. I am just a simple volunteer in the community like everybody else. My official "day" Job is 3rd Level support at Poly but I am unable to provide official support via the community.


Notice: This community forum is not an official Poly support resource, thus responses from Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge. If you need immediate and/or official assistance please open a service ticket through your proper support channels.
Please also ensure you always check the VoIP , Video Endpoint , Skype for Business , PSTN or RPM FAQ's
Message 3 of 3