Sennheiser CEHS-AV 03 Avaya adapter cable for Electronic Hook Switch - 1400, 9400 and 9500 series (504536) New
The Sennheiser CEHS-AV 03 Avaya Adapter Cable for Electronic Hook Switch is suitable for the 1400, 1600, 9400, 9500, and 9600 series Avaya telephones