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501 results about "Off-hook" patented technology

In telephony, on-hook and off-hook refer to the two possible states of a receiver. Off-hook originally referred to the condition that prevailed when telephones had a separate earpiece (i.e., receiver), which hung from its switchhook until the user wished to activate it. When off hook the weight of the receiver no longer depresses the spring-loaded switchhook, thereby connecting the instrument to the telephone line.

Off-hook visual message waiting indicator

In a first embodiment of the invention, a method of providing a visual message waiting indicator signal to an off-hook telephone includes the step of receiving a voicemail message at a central location, and also includes the step of sending a visual message waiting indicator signal from the central location and destined for the off-hook telephone. In an alternative embodiment, a method of receiving a visual message waiting indicator signal in an off-hook telephone includes the steps of being in an off-hook condition, and receiving a visual message waiting indicator signal. This method may further include the step of displaying a visual message-waiting indicator based on the received visual message waiting indicator signal. This method may also include the step of receiving an alert signal, and the step of transmitting an acknowledgement signal in response to the alert signal. In another alternative embodiment, a telephone includes a visual message waiting indicator, and an interface unit adapted to couple the telephone to a network, such that the telephone is in an off-hook condition when coupled to the network and engaged in a communication activity, and is in an on-hook condition when coupled to the network and not engaged in a communication activity, wherein the interface unit is adapted to receive a visual message waiting indicator signal when in the off-hook condition.
Owner:AVAGO TECH INT SALES PTE LTD

Method and apparatus for an improved call interrupt feature in a cordless telephone answering device

A telecommunication device comprising a base unit and a cordless handset, wherein said telecommunication device is operable in a plurality of modes of operation. The base unit includes: (1) a ring signal detection module communicatively coupled to a telephone network; (2) a voice communication channel also communicatively coupled to said telephone network; (3) a wireless communication transmitter module; (4) a wireless receiver module; and (5) a controller for executing program instructions. The cordless handset includes: (1) a ringer module; (2) an ear piece; (3) a microphone; (4) a talk request command input device; (5) a wireless communication transmitter; and (6) a wireless communication receiver. The modes of operation include a talk request mode of operation, wherein (1) a ringing signal is received at said base unit; (2) said base unit transmits a wireless signal to said cordless handset; (3) said cordless handset receives said wireless signal; from said base, and initiates said local ringer module; (4) said base unit counts a predetermined number of rings; (5) said base unit initiates an off-hook condition in response to detection of a predetermined number of rings; (6) an outgoing message (OGM) is played at said base unit; (7) actuation of said talk request command input device is detected; (8) said base unit receives a wireless talk request signal (TRS) from said cordless handset, initiates an OGM end detection means, and continues to play said OGM; and (9) upon detection of end of said OGM by said OGM end detection means, said base unit inhibits the start of an incoming message (ICM) means and connects the calling party with the called party at said cordless handset.
Owner:HENDERSON DANIEL A

Telephone network messaging

In a messaging system, a messaging server transmits signals over the telephone network to be received by equipment at, e.g., the customer premises. The receiving equipment converts the signals into meaningful information (e.g., written or audible words, audible tones, and/or lights), and provides that information (e.g., by audible announcement and/or visual display) to the user. The signals can be of a variety of types. For example, the signal can be the Incoming Caller Line Identification (ICLID) signal associated with an incoming telephone call. Alternatively, the ICLID signal can be can be sent with the set-up of a non-associated telephone call, and can correspond to a message code, such as to provide the recipient with notification information such as emergency notification messages. Such notification information can be substantially simultaneously transmitted to a number of sets of receiving equipment (e.g., all homes in a given region). The notification information need not be transmitted alongside an incoming telephone call, and can be received regardless of whether the telephone equipment at the customer premises is on- or off-hook. The receiving equipment can display and/or announce the information, e.g., in the user's preferred language.
Owner:CLASSCO A NEW HAMPSHIRE CORP

Call related information receiver to receiver transfer

A call related information detector/receiver system which is capable of downloading call related information received at that device to another call related information detector/receiver system remote from the system which initially received the call related information, back over the telephone line. Thus, a remote user while away from the home or office can receive and synchronize call related information at a system other than the one which initially received the call related information. Thus, a remote user can update a local call related information system and review past callers to their home or business telephone at their leisure. Upon establishment of a telephone call between customer premises equipment respectively associated with the two relevant call related information detector/receiver systems, a remote call related information system will request download of call related information logged from another call related information system using the established telephone call. In the disclosed embodiment, the request signals are encoded with DTMF tones, which the receiving call related information system monitors for. Upon acceptance of a request to transmit logged call related information, previously logged call related information is retrieved from its log, formatted for transmission together with suitable header information such as the identity of the transmitting call related information system, and FSK modulated for transmission back over the telephone line. Preferably, the speaker or earpiece of off-hook customer premises equipment will be muted or suppressed during transmission of the data corresponding to the call related information. The particular call related information transmitted may be particularly or generally requested by the remote call related information system, either by pre-stored commands based on a power up configuration of the requesting call related information system, and/or in response to a direct command input by the remote user using DTMF tones.
Owner:LUCENT TECH INC

Dynamically adjustable digital gyrator having extendable feedback for stable DC load line

A dynamically adjustable digital gyrator device for a telephone line interface (e.g., a DAA) utilizing extended feedback and a dynamically adjustable filter to achieve stable convergence in the control of DC line current on a telephone line a short period of time. The low pass filter of the digital gyrator includes at least two (2) different fast filter settings and at least two (2) different slow filter settings based on possible load terminations (e.g., PBX, TAS, etc.), which can be determined based on the dynamic detection of an oscillation on the line. For instance, in a disclosed example, a voice band modem system is allowed to go off-hook with a 1 Hz cutoff low pass filter, and then the output of the low pass filter is checked for an oscillation. If an oscillation is detected, then the poles and / or zeroes of the low pass filter cutoff are changed to a slower convergence rate cutoff frequency (e.g., to 0.1 Hz). As a result, the exemplary voice band modem will converge stably and quickly (e.g., in less than 1 second) before dialing begins. By controlling the DC line current digitally, software can be used to set the DC line current in accordance with predefined characteristics. Predefined characteristics can be set to accommodate varying country specifications instead of using switches to control resistors and capacitors.
Owner:AGERE SYST GUARDIAN

Method And Apparatus For Adapting A Phone For Use In Network Voice Operations

An interface is provided between a conventional telephone and a conventional computer configured for network voice applications including a sound card and modem. The interface allows for use of the telephone during network voice applications such as IP telephony and voice chat. When the telephone is not used, the interface allows for sound to be input and output via the computer sound card and conventional computer microphone and speakers. When the telephone is picked up off-hook, the interface senses the off-hook state, causes the computer sound card to be connected to the telephone instead of the conventional microphone and speakers, and allows for network voice applications to be conducted using the telephone. Various alternative embodiments of the invention allow for signaling of the telephone hook state to software resident on the PC for controlling network voice applications, for sensing DTMF signals in accordance with keypad entries on the telephone to control initiation of phone calls and voice chat sessions, for generating dial tones and busy signals, or other sounds and / or voice messages, in accordance with the telephone hook state and the telephone line status, and for permitting the telephone to be controllably connected to the PSTN for making standard PSTN calls in addition to calls involving network voice applications.
Owner:PRENTICE EDWARD J
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