Cisco Electronic Hook Switch Adapter (AUX/RJ-9 to USB) for Jabra GN9300e Series, PRO 9400 Series, GO 6470 Wireless Headsets and Cisco 8900/9900 Series IP phones supporting USB audio termination.
Jabra (GN Netcom) Cisco USB EHS Cord
Cisco Electronic Hook Switch Adapter (AUX/RJ-9 to USB) for Jabra GN9300e Series, PRO 9400 Series, GO 6470 Wireless Headsets and Cisco 8900/9900 Series IP phones supporting USB audio termination.