A headset base unit (2) comprising a base housing (4), a headset holder (5, 38) for holding a headset (3). The headset base unit (2) has control means (9), by means of which an audio channel can be opened between the headset (3) and a selected one of the telecommunication devices (9, 10, 11), and a display unit (39) with a display (6) adapted for displaying device icons (12, 13, 14) representing connected telecommunication devices (9, 10, 11). A further communication system (95) comprising a headset system (1) and a cordless telephone (109). The headset system (109) comprises a wireless headset (3) with a headset transceiver (51) and a headset base unit (2) with headset base transceiver means (27, 28). The handset transceiver (103) and the telephone base transceiver means (100) can be connected by a second radio link (96) according to the first radio standard. The headset base transceiver means (27) and the telephone base transceiver means (100) are adapted to be connected by a third radio link (65) according to the first radio standard, wherein the headset (3) can be used for a telephone call via the first radio link (66) and the third link (65).