Hello there! I am looking for a conference phone that will work with the 3CX v11 platform. In the past I have used analog polycom phones with with an ATA bit I want to go native SIP. I purchased a Panasonic conferencing phone that they SWORE was a SIP complaint phone, but once I received it, I was apparent that it was designed for their KX series of PBX's and the SIP compatibility was an afterthought. Is there a SIP conferencing phone that is a sure fire match to 3CX? Thanks!