The Shoretel Adapter Cable for Electronic Hook Switch from Sennheiser is suitable for IP 212k, IP 230/230g, IP 265, IP 560/560g, IP 565/565g, and IP 655 phones. It allows you to answer your phone calls remotely. You can end calls by the press of a single button. You can also get incoming call notifications at a distance, by a ringtone in the headset. The cable allows you to control calls on the phone, without using a mechanical handset lifter. The cable is also suitable for use with DW Office, DW Office ML, DW Office Phone, DW Pro 1, DW Pro 1 ML, DW Pro 1 Phone, DW Pro 2, DW Pro 2 ML, DW Pro 2 Phone, SD Office, SD Office ML, SD Pro 1, SD Pro 1 ML, SD Pro 2, SD Pro 2 ML, and D 10 Phone.