I have a PDF of compatibilities for our Polycom phones from Comcast Business VoiceEdge (VVX 500 and 335) and it states that the Supra Plus headsets are supported and U10p variant QD/ED cable is supported.
I ordered these: http://www.newegg.com/Product/Product.aspx?Item=9SIA19P0UM5897 - U10P-S19, but they do not work what-so-ever. I can hear that the power initializes (little click when it plugs in), but I can not hear or talk.
We have a couple A10-16 cables and when we use them, we can hear people talking to us but cannot talk to them.
Any help with finding actual products that are tested to be supported with these phones and Plantronics HW251N and/or HW261N?
Hi Labrix. Here is a link to a site that has compatible headsets for all of our Polycom phones. While the units can be purchased on the site, they may be available on the Newegg site as well.