This GN 1215 cord provides compatibility between any GN Netcom headset and an Avaya 9600, 1600 and 1700 Series office phone.  GN1215 solves the issue with the Avaya special interface which supports sound level protection and works with all of our headsets to properly adjust the volume levels. There are switchable settings for these Avaya phone models for each headset. Cord will only work on above mentioned phones and is not a "universal" solution in applications presently served by the GN1200 or GN1210 cords.

See GN 1215 Data sheet for more details