The EHS113 Adapter enables remote Electronic Hookswitch Control (EHS) with Armor wireless headsets and the latest generation of Polycom Soundpoint and VVX phones.
Compatible Polycom Phones: 320, 321, 335, 330, 331, 430, 450, 550, 560, 650, 670, & VVX 1500.
Note: For IP 300 Series a 2.5mm to RJ9 adapter is also required.