This RJ9 headset cable ONLY compatible with Cisco IP phones with RJ9 headset port, such as models 6841, 6851, 6921, 6921, 6945, 6961, 7821, 7841, 7861, Cisco 7931G, 7940, 7940G, 7941, 7941G, 7942G, 7945, 7945G, 7960, 7960G, 7961, 7961G, 7962G, 7965G, 7970, 7970G, 7971, 7971G, 7975, 7975G, 8811, 8841, 8845, 8851, 8861, 8865, 8941, 8945, 8945G, 8961, 9951, 9971
This RJ9 headset adapter is compatible with MKJ headsets with 4-pin QD, do not buy it for EncorePro 500/700 digital series headset
Kevlar-reinforced cord for a strong and lasting performance. Built-in reinforced cord will protect headset against office chair wheels, sharp objects on daily use.
The maximum stretch length of this headset connector is about 11.35-foot, the long cord provides added convenience and you can move around the desk freely
The RJ9 bottom cord is compatible with Plantroncis U10, it does not compatible with Jabra headsets.