Where can I find really helpful, easy to follow information about all new series Plantronics Hookswitches?
From that page, they can click on the link that says "EHS_guide_en.pdf"
Note: you may also be able to use the following link (ehs_guide_en.pdf) to go directly there, however it opens a PDF directly, so you *may* need to send the previous link.
Phone makes and models compatible with PLT Hookswitches
Diagrams on different phone models and where to connect the hookswitches
What settings the Headset needs to be on to work with the EHS
Aastra, Alcatel-Lucent, Avaya, Cisco, Nortel, Polycom, Shore Tel, Siemens, Tenovis & Toshiba Phones