Abstract: Existing automatic log on/log off systems in telephone systems determine whether or not a workstation is occupied and whether calls can be directed to that workstation by determining whether or not the amplifier that provides the interface between the telephone system and the occupant's headset is plugged into the workstation. Recent headsets have included a connector in the cord between the headset and the amplifier, enabling the occupant to leave the workstation without unplugging the amplifier. However, this defeats the sensing mechanism of the existing automatic log on/log off system. A wireless telephone headset system according to the present invention replaces the existing wired amplifier and headset assembly and includes a detector for determining whether a wireless communication link exists between the headset and the amplifier, and an activator for activating the existing automatic log on/log off system in the telephone system.

Abstract: A communications headset has an earpiece housing that rests on top of the ear and which also has a receiver assembly coupled to the earpiece housing. The receiver assembly is rotatable between a position at which the receiver assembly is against the ear and a position at which the receiver assembly is rotated away from the ear, thereby allowing a user of the headset to wear the headset comfortably even at times when the headset is not in use for communication. The receiver assembly is biased toward the ear, thereby acoustically coupling the receiver assembly reliably and snugly to the ear when the receiver assembly is at the position against the ear. When the receiver assembly is at the position rotated away from the ear, the receiver assembly is held securely in that position.

Abstract: Existing automatic log on/log off systems in telephone systems determine whether or not a workstation is occupied and whether calls can be directed to that workstation by determining whether or not the amplifier that provides the interface between the telephone system and the occupant's headset is plugged into the workstation. Recent headsets have included a connector in the cord between the headset and the amplifier, enabling the occupant to leave the workstation without unplugging the amplifier. However, this defeats the sensing mechanism of the existing automatic log on/log off system. An amplifier according to the invention replaces the existing amplifier and includes a detector for determining whether a communication link exists between the headset and the amplifier, and an activator for activating the existing automatic log on/log off system in the telephone system.

Abstract: A telephone headset apparatus is disclosed. This headset apparatus includes a body having a microphone at one end and a transducer at the opposite end, an earhook, for attaching the apparatus to the ear of the operator, and a mechanism, contained within the body in a movable engagement, for holding the earhook in a frictional engagement that allows for movement of the earhook, with three degrees of freedom. The mechanism is located at a point within the body where upon adjustment of the earhook by the operator (i.e., rotated, tilted, pivoted) the headset apparatus remains properly balanced and within the sound envelope of an operator, for uninterrupted operation.

Abstract: An on-line indicator (40) for the multipurpose headset amplifier comprises a holder in two parts (45) arranged to be snapped onto the ascending, holder (10) which is mounted on the housing (5) of the multipurpose headset amplifier. The on-line indicator has a rotatable indicator or light emitting diode (41) which is coupled to the multipurpose headset amplifier by means of a cable (42). The light diode will light up when the headset is in use to indicate to others that the user of the headset is on the line.

Abstract: An audio frequency compressing system for amplifying an input signal to produce a power output signal while removing high-level signals which could harm a listener. Gain control in the feedback path of an amplifier includes both a gain controller circuit for supplying a constant feedback impedance and a plurality of resistors which can be coupled to the gain controller circuit to increase or decrease the feedback impedance. Coupling of the resistors to the gain controller circuit is controlled by a feedback control circuit having both an automatic gain control circuit and a continuous high-level protection circuit.

Abstract: A multipurpose headset amplifier for the connection of a headset (11) to a telephone instrument comprises a housing (5) having an ascending, thready holder (10) for a headset (11) and connection jacks (21, 22, 23) for the headset (11), the telephone instrument (22) and for the telephone instrument's handset, the housing having at the upper side comprises manuel operating members (6, 7, 8) for the adjustment of the device, and manual controls (15) at the underside for the adaptation of a headset to the impedance and signal level of any telephone instrument. The amplifier comprises an internal power supply (12) and a jack (13) for external power supply. The amplifier is furthermore provided with a microphone switch having a light-emitting diode (9), a volume control (7) and a switch (6).

Abstract: A headset (1) with sound receiving microphone (6) and sound reproducing transducer (3) is arranged to be worn on a person's outer ear (2). For this purpose, the headset has a post auricle mount (9) with a lengthwise adjustable stabilizer (10) behind the ear, said post auricle mount being secured to the sound reproducing transducer housing (3) in a pivotable manner, hereby enabling it to be swivelled in several directions.