Had this exact issue at two sites using SV8100 PBX's.
There is documentation on Polycom's website and on NECNTAC on how to access the Polycom phone using T-FTP on your laptop to change the payload settings.

I thought this was resolved by the upgraded IPLB card and was only an IPLA issue??

I found it easier to just replace the IPL-A card with an IPL-B in the 8100 system. the process of modifying the IP6000 phone was too cumbersome.

Last edited by doghart; 04/18/16 03:22 PM.