This cable allows the ClearOne Chat 50 to connect to the headset jack of Cisco 79XX phones.  This cable has a 3.5mm on one end (to connect to the Chat 50), and RJ-9 on the other end, which goes into the Cisco headset jack. This cable also has a switch and a 2.5mm headset jack. This allows you to connect a headset, and then switch back and forth between speaker phone mode with the Chat 50, and headset mode with your 2.5mm headset.

*Important Note on Returns: Due to the manufactures policy. All Sales are FINAL.  It's not returnable, not refundable under any circumstance.  If it's defective, ClearOne will replace it under warranty