摘要:
An apparatus for detecting a dual tone alert signal in a telephone system capable of at least off hook mode operation includes a processing channel for each tone. Each channel consists of a bandsplit filter for extracting the tone of interest and attenuating the other tone; a comparator for comparing the output of said bandsplit filter with a threshold value; and an adaptive threshold generator for generating said threshold value adapted to the amplitude of the output of said bandsplit filter to reject speech and music imitations. The apparatus offers improved talkdown and talkoff immunity.
摘要:
The invention relates to packet switched networks, and more particularly to a circuit and a method for clock recovery in cell-relay networks, particularly ATM (Asynchronous Transfer Mode) networks offering constant bit rate services. The multimode clock recovery circuit has an embedded digital phase locked loop including an input circuit capable of generating a phase signal from at least two types of input signal. The phase signal controlling the output of the phase locked loop generates clock signals for the constant bit rate services.
摘要:
A method of information search comprising an externally maintained database (40, 42, 48) or a personal database (10) of telephone numbers to provide a search criteria and match the search criteria against the two databases to generate a single list of search results. The externally maintained database (40, 42, 48) and the personal database (10) may each be stored locally and/or at a remote location. Preferably, the remote location is at a telephone company (48).
摘要:
A telephone enabling a user to promptly recognize the other party of the incoming and also enabling a user to promptly recognize the completion of a retrieval of an optional phone number having registered thereto is provided, which includes a storing means for storing phone numbers and a retrieving means for retrieving an optional phone number out of the phone numbers stored in the storing means, wherein a retrieving tone to be given out at a retrieval correspondingly to the optional phone number agrees with an incoming tone to inform of an incoming from a party having the optional phone number.
摘要:
The invention concerns a telephone comprising a plurality of options accessible by surfing in a control arborescence, means for navigation in the control arborescence, storage means (8) containing a plurality of audio messages to assist navigation in the control arborescence and sound transmission means (11), the audio messages assisting navigation in the control arborescence being designed to be sent by the sound transmission means (11) during navigation in the control arborescence. The invention is particularly applicable to GSM mobile telephones.
摘要:
A terminal (100) has a feedback device (14;20) and keys (120) that have an echo state and a register state. When a key is in the echo state, the feedback device (14; 20) provides feedback identifying which key is selected. When the key is in the register state, the terminal processes the key. The feedback device can be an audio (14), a visual (20), or an audio-visual display. Getting feedback on which key is being selected without registering the key allows a user to determine if the key the user is selecting is the key the user wants to select. This saves the user the many keystrokes that would otherwise be involved in either clearing the key and entering the correct one, or clearing the entire operation and reentering all of the information needed to set up the operation. This is particularly advantageous for wireless telephones. A wireless telephone (100) having an audio display that announces the key before it is registered allows a user to dial a telephone number without looking at the wireless phone (100).
摘要:
Es handelt sich um eine Vorrichtung zum Erfassen der Gebühreneinheiten von Telefongesprächen, die einen Gebührenmonitor zum Einschleifen in die Anschlußleitung eines Telefonapparates aufweist. Der Gebührenmonitor besitzt einen Mikroprozessor zum Mitlesen der angewählten Telefonnummer und zum Erfassen der Gesprächsdauer. Ferner ist ein Datenspeicher mit einem Rechner zum Erfassen des anzuwendenden Gebührensatzes und zur Ermittlung der Gebühreneinheiten über die Gesprächsdauer vorgesehen. Ein Anzeigefeld läßt die ermittelten Gebühreneinheiten und die daraus resultierenden Telefongebühren erkennen.
摘要:
The object of the invention relates to enhancement of the convenience of a communication apparatus (1) utilizing a public line (3). A facsimile apparatus (1) and a telephone set (2) are connected to a one telephone line (3) in parallel with each other. A voltage variation ΔV due to closing/opening of a DC circuit of the telephone set (2) is detected via a hook detector (6) of the facsimile apparatus (1) and the operation mode of the telephone set (2) is detected in response to an output from the hook detector (6). The detected operation mode of the telephone set (2) is stored in a RAM (14) and outputted by a printer (9) or on a display screen (10). A display is outputted in accordance with the closing/opening of the DC circuit of the telephone set (2) on the display screen (10).
摘要:
@ Die mit der Erfindung vorgestellten optischen Anzeigeeinrichtungen an einem Fernsprechapparat dienen nicht nur dazu, die Rufnummer eines Gesprächspartners anzuzeigen, sondern es sind auch weitere Anzeigeelemente vorgesehen, die den Verbindungszustand, die Verbindungsart, die Berechtigungsklasse und permanent oder vorübergehend wirksam geschaltete Zusatzmerkmale des Gesprächspartners anzeigen. Diese sogenannte Status-Anzeigen können sowohl bei einem anrufenden Teilnehmer als auch bei einem angerufenen Teilnehmer erscheinen. Die Vorteile der Erfindung liegen darin, daß ein mit solchen Anzeigeeinrichtungen versehener Fernsprechapparat dem Teilnehmer ermöglicht Verbindungszustände, Verbindungsarten sowie die bei einem Gesprächspartner vorhandenen Merkmale optimal zu koordinieren. Es ist außerdem vorgesehen, daß die Anzeigeeinrichtung dem Teilnehmer Auskunft darüber gibt, welche Merkmale bei ihm selbst aktiviert sind. Es ist außerdem eine Schaltungsanordnung angegeben, womit die aus der zentralen Steuereinrichtung einer Vermittlungsanlage kommenden Anzeigedaten zu den in Frage kommenden Fernsprechapparaten gesendet werden können.