Hello msenior,
welcome to the Polycom Community.
It could be possible that the Firmware running on the Unit does not offer this functionality and as you have not provided that Information nobody will be able to cross check against the Release Notes.
The Forum holds Information in the FAQ how to provision the Phone and upgrade this functionality.
Does the display not show a more Button?
I am not aware if the SIP Platform you are using is a supported Call Server and you may have to contact your Polycom Reseller and/or Polycom Support via PPI (Pay per Incident) to get more detailed support.
Best Regards
Steffen Baier
Polycom Global Services
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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.
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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
