This is helpful
http://www.mea.jabra.com/headsets-and-speakerphones/compatibilityguide#selectedProducts=%5B%7B%22EhsRccSupport%22%3A0%2C%22EhsSupport%22%3Afalse%2C%22ID%22%3A5637190419%2C%22Manufacturer%22%3A%7B%22ID%22%3A5637148635%2C%22Name%22%3A%...