Plantronics Avaya HIP-1 Adapter Coiled Cable with a Quick-Disconnect to a RJ9 Modular Plug

(Avaya HIP cable.  Part Number - 61804-01 / 61804-43)

for connecting your Plantronics H-series headsets

to Avaya 4606, 4612, 4620, 4624, 4630 IP Phones