Abstract: A hands free communication device (2), such as a headset, adapted to be simultaneously connected to a first telecommunication device (2) and a second telecommunication device (3). The hands free communication device (2) is adapted to send a call status signal to the first telecommunication device (3) upon reception of a corresponding call status signal from the second telecommunication device (4) and to send a call status signal to the second telecommunication device (4) upon reception of a corresponding call status signal from the first telecommunication device (3). The invention also relates to a system implementing such a hands free device (2) and a method using such a system.

Abstract: The invention relates to a method of programming a processing unit by firmware in a protocol converter for providing first data received from a telephone device in accordance with a first protocol to a headset system in accordance with a second protocol and for providing second data received from the headset system in accordance with the second protocol to the telephone in accordance with the first protocol, the operation of the protocol converter being controlled by the processing unit. The invention further relates to a protocol converter, such as an Electronic Hook Switch adapter, for providing first data received from a telephone device in accordance with a first protocol to a headset system in accordance with a second protocol and for providing second data received from the headset system in accordance with the second protocol to the telephone device in accordance with the first protocol. The headset system provides firmware to the protocol converter in accordance with the second protocol.

Abstract: A method of and a system for synchronizing isochronous audio data frames provided by a USB interface to a clock of a wireless RF communication device is provided. The USB interface and the wireless RF communication device are connected via an I2S link, the method comprising receiving the isochronous audio data frames and the wireless RF communication device clock in a streaming controller, phase locking the isochronous audio data frames to a USB interface clock, counting start-of-frame pulses of the phase locked isochronous audio data frames, comparing the counted start-of-frame pulses with the wireless RF communication device clock to determine a difference signal, the difference signal triggering a synchronization event code when a threshold difference has been reached, rate matching the isochronous audio data frames to the wireless RF communication device clock upon receiving the synchronization event code.

Abstract: A communication device (1, 15, 25, 35) comprising a housing (2) with a housing wall (50) bounding a space (7). The housing (2) comprises a first housing part (3) and a second housing part (4), which are joined along a dividing line (40), whereby a first abutment face (41) of the first housing part (3) abuts a second abutment face (42) of the second housing part (4) along the dividing line (40). A first microphone transducer (8) is arranged in the housing (2). The first microphone transducer (8) comprises a microphone opening (9), which is connected to the space (7). The space (7) is communicating with the surroundings via a peripheral line (47) of housing openings (39) in the outer side (44) of the housing wall (50) arranged along the dividing line (40), and housing channels (46) extending between the housing openings (39) and the inner side (43) of the housing wall (50). The housing channels (46) and the housing openings (39) are provided as recessions (45; 48) in the first abutment face (41).

Abstract: A headset (1) comprising two earphones (2R, 2L) for arranging at the right and left ears of a user. The right and left earphones (2R, 2L) are interconnected by a neckband (4). The neckband (4) comprises light emitting means (5; 6; 8; 9; 10).