AGFEO Headset 9120 - The Icing on the Cake This AGFEO headset including DECT base with DHSG technology and in combination with an AGFEO System Phone, offers the user total flexibility. The AGFEO System Phone offers a DHSG interface, this will allow the automatic answering of calls directly from the headset, without the use of any headset lifters. A ringing tone in the headset will indicate an incoming call which can then be answered or terminated using the off hook button directly on the headset. Can be connected to a AGFEO ST 40 System Phone or the ST 30 with a HS-Module 30.