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- HP Community
- Poly Phones
- Desk and IP Conference Phones
- formatting IP 550 file system

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04-13-2019 01:56 AM
Hello @randyrlopez ,
welcome to the Polycom Community.
Factory installed certificates stay untouched by this.
Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.
Best Regards
Steffen Baier
Notice: I am an HP Poly employee but all replies within the community are done as a volunteer outside of my day role. This community forum is not an official HP Poly support resource, thus responses from HP Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge.
If you need immediate and/or official assistance for former Poly\Plantronics\Polycom please open a service ticket through your support channels
For HP products please check HP Support.
Please also ensure you always check the General VoIP , Video Endpoint , UC Platform (Microsoft) , PSTN

04-15-2019 02:05 PM
Hi Steffen,
Thank you for assuring that the factory installed certificate will not be affected by formatting the File System. I did format the fiel system of the phone and it retained the Factory Installed certificate. With the phone formatted, we were able to upate the firmware and have the phone provisioned to the Ring Central server.
A follow-up question if I may. There are a bunch of our phone that have Self-Signed as Device Certificate. Base on my conversation with one of Ring Central's provisioning support, the phone will not be able to provision itself with the provisioning server if it has the Self-Signed certificate. Is there a work around that you guys know to have this phones to get provisioned using Ring Central's server? They had given us another way to have phones with self-signed certifcate to be added to Ring Central but we are missing some of functionalities which we wanted to use if we were able to provision them with the Ring Central provisioning server.
Thank you.
04-17-2019 02:33 AM
Hello @randyrlopez ,
For more details on the Factory Device Certificate etc. please check => here <=
In addition to the factory installed device certificate, we also trust a variation of different certificates as outlined for example => here <=
Ring Central should be able to securely provision your phones.
Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.
Best Regards
Steffen Baier
Notice: I am an HP Poly employee but all replies within the community are done as a volunteer outside of my day role. This community forum is not an official HP Poly support resource, thus responses from HP Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge.
If you need immediate and/or official assistance for former Poly\Plantronics\Polycom please open a service ticket through your support channels
For HP products please check HP Support.
Please also ensure you always check the General VoIP , Video Endpoint , UC Platform (Microsoft) , PSTN