The sennheiser ccel191 headset cable allows the connection of any sennheiser headset terminating in an easy disconnect plug to connect onto a dect cordless telephone the headset cable has a 25mm jack plug on one end and an easy disconnect on the other the cable is lightweight amp durable and is very easy to connect to both the dect telephone and the headset dect cordless phones are extremely popular due to the convenience of being mobile whilst holding a conversation this ccel 191 headset