&lt;b&gt;Jabra Link 14201-19 optimized for Avaya phones (14201-19)&lt;/b&gt;&lt;br /&gt;- EHS adapters that provide Electronic Hookswitch Control (EHS) for a wide range of Avaya phones (see Jabra compatibility overview or consult your GN Netcom sales manager or distributor for the right solution)&lt;br /&gt;- Enables users to answer and end calls from the Jabra wireless headset up to 150 meters away from their desk (wireless range depending on headset selected)&lt;br /&gt;- Can be used with the following Jabra wireless office headsets: Jabra PRO 9400 Jabra GO 6470 Jabra GN9350e Jabra GN9120 Jabra GN9120 DUO